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It started when two canine scientists decide to become pen pals in an era of digital media...

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Showing posts with label blog. Show all posts

1 December 2017

What Do You Get When You Cross an Anthropologist and a Zoologist?

What Do You Get When You Cross an Anthropologist and a Zoologist?


Please welcome today's guest contributor, Molly Crossman, MS, MPhil, (Twitter) for a brief introduction to the science of Anthrozoology. After reading this post, you'll hopefully add Becoming an Anthrozoologist to your reading list! This new blog is put out by the student committee of the International Society for Anthrozoology (ISAZ website, FB, Twitter), and they're seeking contributions (details below).


Naruto’s Selfie. Credit: David Slater, Wikimedia Commons  
If you like animals* (and I’m guessing you do if you’re reading this), you probably know the story of Balto, the heroic sled dog who saved an Alaskan city from a diphtheria epidemic. Or maybe you remember Clever Hans, the horse who could apparently do arithmetic, but was really just reading unconscious nonverbal cues from the people around him (and taught us all a lot about expectancy effects as a result). More recently, you may have heard about Cecil the lion, who galvanized public interest in wildlife welfare after being shot and killed by big game hunters. The list of infamous animals goes on, from Naruto, the monkey who took one of the most famous selfies of all time, to Duke, the dog who was elected mayor of a Minnesota town three times in a row.  

These stories about animals get widespread attention, capture our hearts, and often lead to changes not only in our attitudes towards animals, but in how we treat and protect them. But these stories aren’t really just about animals. These are stories about human interactions with animals. These stories are about the roles that animals play in our lives, and the roles that we play in theirs’. And there is an entire field of study devoted to understanding these kinds of interactions between people and animals. 

Anthrozoology is the multidisciplinary study of interactions between people and animals. Anthrozoologists come from a wide range of disciplines including ethology, biology, education, environmental science, history, literature, neuroscience, nursing, occupational therapy, psychology, sociology, and veterinary medicine (to name just a few examples). What anthrozoologists all have in common is that they apply their diverse expertise to ask and answer questions about human-animal relationships.


Anthrozoologists are the folks who brought us the revelation that dogs are more important than cats when it comes to online dating, showed that dogs facilitate social interactions for individuals with physical disabilities, revealed serious ethical issues with dolphin-assisted therapy, demonstrated why people think happier chickens lay tastier eggs, helped us understand who owns pets (and who doesn’t), and explained why people are compelled to (illegally) keep primates as pets. In other words, anthrozoologists do some really cool science.  

So, now that I’ve (hopefully) piqued your interest, where should you go to keep up with the latest in anthrozoology? I’m so glad you asked! 

Becoming an Anthrozoologist is the new blog from the student committee of the International Society for Anthrozoology. We started the blog as a way to share information on human-animal science and to help students in the field promote their work. 

Our first post came out in October, and I think it will be of interest to DYBID readers. The post was written by Lynna Feng, of the Anthrozoology Research Group at La Trobe University. In it, Lynna discusses a topic that is as personal, controversial, and polarizing as parenting techniques, and that’s dog training methods. 



Wikimedia Commons 
You are probably already familiar with the ongoing debate around positive, reward-based training methods versus dominance-based methods (if you aren’t familiar with the debate, Dr. Sophia Yin, an advocate for positive training techniques, has a helpful description on her website). But, did you know that there’s controversy even among those who agree about the importance of using positive approaches?

In her post, Lynna addresses the debate surrounding clicker training. She discusses a recent study, in which she and her supervisors evaluated what clicker training is, and why it’s controversial. Lynna gets into why people use clicker training, and what trainers’ think are best practices. For details about what she found, be sure to read the post! 

We plan to publish the blog quarterly, so look for the next edition in January and be sure to follow the ISAZ Student Blog. If you are not already a member of ISAZ, we also hope you will consider joining. Check out the ISAZ website for more information on becoming a member, and be sure to visit the 2018 conference website for information on the upcoming conference in Sydney, Australia. The deadline for conference submissions is January 18, 2018. 

P.S., If you’re a student member of ISAZ, we hope you will consider submitting something to the blog! 

* Humans are, of course, a type of animal. However, for the sake of clarity and consistency with linguistic norms, I use the term “animal” here to refer to specifically to nonhuman animals. 


Grad Student & Co-Director of Innovative Interactions Lab 
Department of Psychology, Yale University 
Email: molly.crossman@yale.edu
Twitter: @mollycrossman

DYBID here! Did you know that Molly first contributed to DYBID with a post about her research: "Can Therapy Dogs Help Students Handle Stress?" Thanks very much for joining us again, Molly!

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9 February 2015

How do dogs and people respond to a crying baby?

How do dogs and people respond to a crying baby?


Guest post by: Min Hooi Yong, PhD


Does your dog know when you are sad? Puzzling question, perhaps? 

We get a range of answers from dog owners, from the confident Yes!to Maaaaybe?, and the hopeful I like to think so.... Many dogs are considered to be part of the family, and we expect our family members to empathize with us when we are sad.

A recent study found that dogs showed submissive behavior (licking and nuzzling) when an adult person pretended to cry but not when she is humming1. Does the licking and nuzzling behavior mean that the dog understand that we are feeling sad? (I hear YES-es). Or can it be that because we are crying, we ignore everyone including our dog, and so, our dog will nuzzle us seeking attention and/or comfort?
(source)

There have been many studies showing that animals (e.g. rodents, birds, chimps) experience distress or concern (empathic response) when observing either kin or non-kin in distress. For example, giving electric shocks to rats and pigeons. The observer experienced a change both behaviourally and physiologically, and these responses are often considered as an experience of emotional contagion, an elementary form of empathy. Emotional contagion is essentially the spreading of all forms of emotion from one person (or animal) to another (like the spreading of joy or distress through a crowd - think of a flash mob dance effect filtering through a crowd)2.

Hearing a baby cry can be quite distressing. What happens to us when we, the observers, hear the cry? We respond by getting up and checking on the crying baby, increased attention. Our body also releases the stress hormone cortisol when we hear the cry, regardless of age or parenting experience3,4. Also, we can tell if the crying is urgent or not. We do, sometimes find crying aversive (imagine a baby crying non-stop throughout your long-distance flight).
Flickr/thedalogs
In our study, we wanted to know if dogs and humans show a similar physiological response to a baby crying. We had three questions: 
  1. We know that dogs are attached to humans, so would dogs show increased attention to a baby crying and babbling? 
  2. Exposure to uncontrollable white noise is considered aversive and elicits submissive behavior. If dogs find crying aversive, would dogs show submissive behavior towards crying as well as white noise? 
  3. Do dogs show an increased stress response (measured in their salivary cortisol levels) to a baby crying compared to white noise and a baby babbling, similar to humans?
We had 75 dogs and 74 humans listen to one of three sounds. A human baby crying:

A human baby babbling: 

Or white noise:

Each sound was played at an average volume of 82 decibels similar to chamber music in a small auditorium (not loud enough to cause hearing damage, but it is loud). We collected saliva before and after listening to one sound from both dogs and humans for their cortisol levels. We also analyzed dogsbehavior while the sound was played, and collected sound ratings about how aversive people found the sounds.

What did our three questions reveal? First, we found that both dogs and humans showed an increase in cortisol levels only after listening to crying, but no changes to baby babbling and white noise. Second, dogs showed increased attention to both the crying and babbling sounds, but not to white noise. Third, dogs displayed increased submissive behavior (e.g. the dog’s body and head were lowered, the ears were held flat and back, the tail was lowered and sometimes slightly between their legs or wagging rapidly side-to-side, the tongue pro-truded slightly, or the dog raised one leg in a hesitant or placating manner) to the crying and white noise, but not to babbling. Additionally, human participants rated the white noise as more aversive than crying (see table below for a summary). We also analyzed other possible aspects that might have influenced the dogsresponses such as time of testing, demographic data e.g. neutered status and sex, acoustic features in the sounds (pitch and melody), and even dog ownersunintentional cuing. We found that the responses shown were a result of distress, evident from crying.


You might ask why submissive behavior was shown during crying and white noise. Let’s start with white noise. Our human participants perceived white noise as more unpleasant compared to crying. Humans tend to cover their ears and animals also show similar avoidance, and what better way than to lower your head? On the other hand, with crying sounds, one is generally more subdued (sympathetic concern) especially when you can hear the distress meaning in the sound. The combined behavioral indicators during these sounds (e.g. lowered posture, shaking, stimulus avoidance) points toward submissive behavior.

In humans, an increase in cortisol and attention is interpreted as a demonstration of
emotional contagion3,4. This unique pattern of physiological and behavioral responding to crying in our study is most consistent with (a) emotional contagion in dogs, providing first evidence that dogs, like humans, experience a physiological response to human infant crying, and (b) suggests the first clear evidence of cross-species empathy (i.e. canine emotional contagion to human distress). 

Author
Min Hooi Yong has recently completed her PhD under the supervision of Professor Ted Ruffman in the Department of Psychology, University of Otago, New Zealand. You can follow her research, or Prof Ted Ruffman. This study has been published in the journal Behavioural Processes”:

Min Hooi Yong
Acknowledgements
We would like to thank all the dog owners and their dogs who participated in our study, and to Stephanie McConnon, Mary Saxton, and Barbara Lowen for allowing us to use their dog videos. Mia is a female English Setter aged 3, Annie is a female Border Collie aged 9, and Flack is a male mixed breed (Collie/Husky/Heading) aged 4.

References
1. Custance, D. & Mayer, J. Empathic-like responding by domestic dogs (Canis familiaris) to distress in humans: An exploratory study. Anim. Cogn. 15, 851–859 (2012).
2. De Waal, F. B. M. Putting the altruism back into altruism: The evolution of empathy. Annu. Rev. Psychol. 59, 279–300 (2008).
3. Fleming, A. S., Corter, C., Stallings, J. & Steiner, M. Testosterone and prolactin are associated with emotional responses to infant cries in new fathers. Horm. Behav. 42, 399–413 (2002).
4. Giardino, J., Gonzalez, A., Steiner, M. & Fleming, A. S. Effects of motherhood on physiological and subjective responses to infant cries in teenage mothers: A comparison with non-mothers and adult mothers. Horm. Behav. 53, 149–158 (2008).

Thank you, Min, for discussing your research on Do You Believe in Dog? View other guest contributors here ~ Julie & Mia 

©  Do You Believe in Dog? 2015 
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15 January 2015

2015: Puppy New Year! Get some science into your dog

2015: Puppy New Year! Get some science into your dog


2015 is a bright and shiny new year for canine science! 

But first, this face:

After being a dog-less household for eight months (you might remember we sadly farewelled Elke in 2013 and gut-wrenchingly, also old man Caleb, in the first half of 2014) we welcomed a new member to the family at the end of 2014. 

Those paws. Not photoshopped.
If I'm honest with you, I'd been stalking PetRescue quietly for a month or so, not really sure if the time was right, but also open to being inspired to make it the right time to welcome a new dog into our lives. I eventually made a call to a shelter a long, long way away about a dog I'd seen who looked like the kind of dog I thought would be a good fit for our family over the next fifteen years. His profile had been up for a few weeks and I was concerned he might be nearly out of time to be adopted. The lovely shelter staff let me know he'd actually just been adopted that morning - I was thrilled for him and his new family. Probably a good thing anyway, that shelter was 5 hours' drive away - no small distance. 

The following day I received a message from the shelter staff - there was another dog - a younger pup, similar type, would I be interested? "Send me some photos and a video clip of him" I said... and they did. I told Julie about the pup and how far away he was. "Love this story!! Keep it coming ;)" she said via email. Huh, I thought - what an adventure this could be to meet a new family member - and luckily, my partner agreed!

So a week later, coincidentally on my birthday, we headed off after lunch on a 400km (that's 250miles to those of you who prefer miles) drive to a faraway coastal town south west of Melbourne to meet this four month old pup. He had come into the regional shelter as a stray. Whether he was deliberately dumped, wandered off through an open gate, or actively strayed by jumping a fence - we'll never know. That's part of the shelter dog story - not necessarily knowing what came before. 

What we do know is this: 
  • He was not identified by microchip, had no collar with ID and was not desexed
  • No one came looking for him during his two weeks in the shelter
  • On meeting us, he was excitable, mouthy and jumpy, but calmed down fairly quickly
  • We have named him Rudy (roo-dee), inspired by Rudolph as it was Christmas week


What is he?
We've been asked that a lot! Rudy is a Staghound. Staghounds in Australia are similar to Lurchers and Longdogs in the UK - a 'type' of dog, rather than a breed. Staghounds are generally greyhound x deerhound with maybe a bit of whatever else was around the area in them too. They can vary widely in looks as they are bred with an emphasis on health, performance and longevity, rather than to a physical standard. They are generally bred to help with hunting in rural areas, but like greyhounds, can make excellent companions as well. As you'd expect, they are highly distracted by moving things.

A diet of science
Inevitably, we're feeding Rudy a daily dose of science. If you want to keep up with how he's going, you can follow the #RaisingRudy hashtag on Twitter, keep up with our Do you Believe in Dog? Facebook posts, or check in here at the blog for regular updates. I've never claimed to be a dog trainer, but I'm certainly aware of the importance of putting the wide array of scientific findings into practice with our dogs to help them have a great life and help us enjoy our time with them.

So far, over the first couple of weeks Rudy's been with us, this has looked a bit like this:
In these early days, we're focusing on socialisation (new experiences, places, people, surfaces, sounds, smells), basic training (toilet training, recall, sit, leash walking, house behaviour, independent time outside) and getting to know Rudy (learning how he responds to new places, loud noises, other dogs and people, etc.). We're marvelling at those ears. 

We're remembering what having a puppy in the house means (e.g. encouraging the puppy to splash its feet in a toddler pool is super funny and cute, until it starts repeating that behaviour in the indoor water bowl and floods your laundry!). We're a tidier household for it (Shoes go in cupboards! Pre-schooler's toys get put away! Remote controls go up high!).

If, like us, it's been a while since you raised a puppy, you might enjoy the back seat experience (sometimes hilarious, sometimes frustrating!) offered by the new BBC documentary series 'Six Puppies and Us' - Episode 1 linked here:
What science have you fed your dog recently? 
What should I be sure to feed mine? 

Let us know your thoughts by commenting on the blog, Facebook or Twitter - and join in #RaisingRudy.

Til next time, 

Mia

p.s. No, this hasn't turned into just a puppy blog! The Do You Believe in Dog? team will still be bringing you regular guest posts from fellow canine scientists, monthly updates on the science that's caught our attention and news on major events we attend in 2015.

Further reading:
Kidd A.H. & Kidd, R.M. (1989). Factors in Adults' Attitudes Toward Pets, Psychological Reports, 65 (3) 903-910. DOI: http://dx.doi.org/10.2466/pr0.1989.65.3.903 

Hiby E.F., Rooney N.J. & Bradshaw J.W.S. (2004). Dog training methods: their use, effectiveness and interaction with behaviour and welfare. , Animal Welfare, 13 (1) 63-70. 

© Mia Cobb | Do You Believe in Dog? 2015
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21 November 2014

Dogtober = Canine science in October


What a BOOMING month for dogs and science October was! We've captured the links to all the latest blogs, research and news that caught out attention throughout Dog-tober.

Thanks to Storify (click here if the you can't see the collection of links below) you can make sure you didn't miss out too.


Further reading:

Bradshaw J.W.S. & Nicola J. Rooney (2014). Why do adult dogs ‘play’?,
Behavioural Processes, DOI: http://dx.doi.org/10.1016/j.beproc.2014.09.023

Bozkurt A., Barbara Sherman, Rita Brugarolas, Sean Mealin, John Majikes, Pu Yang & Robert Loftin (2014). Towards Cyber-Enhanced Working Dogs for Search and Rescue, IEEE Intelligent Systems, 1-1. DOI: http://dx.doi.org/10.1109/mis.2014.77
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26 September 2014

Cat and Dogs: seeking solutions with sniffing canines and science

Cat and Dogs: seeking solutions with sniffing canines and science


Hi Mia and Julie, 


First of all, I LOVE your blog! 

After meeting at SPARCS this past summer (summer for us in North America.. I take it summer is just beginning in Australia!), I’ve followed it closely. 

You do amazing things for the promotion of  canine science. Serious love.

A bit of background for the readers: I’m currently doing my PhD at Dalhousie University in Halifax, Nova Scotia in Canada, under the supervision of Dr. Simon Gadbois

Dr. Gadbois has an amazing amount of knowledge and experience in the science of sniffing (just check out Gadbois & Reeve, 2014 link below!). 

He’s trained sniffer dogs for the conservation of ribbon snakes and wood turtles, to track coyotes, and to detect invasive pests in lumber. He and I have taken on a different type of project and are studying the intricacies of biomedical detection dogs, specifically, the very interesting phenomenon of Diabetic Alert Dogs

Cat Reeve at #SPARCS2014 where she won the 'Best Emerging Researcher' prize

I say interesting because there’s anecdotal evidence suggesting that some dogs alert their owners to hypoglycemic events (low blood sugar). In 2008, Deborah Wells published a series of case studies where dogs were reported as signalling (barking, licking, pawing etc. the individual) while their owners were awake, while they were sleeping, and even when their owners were in a different room with the door closed! And this is with no previous training! 

Isn’t this fantastic! Severe hypoglycemic events can be extremely dangerous for individuals with diabetes. If not treated, they can lead to seizures, comas, and even death. The fact that dogs may be able to alert an individual before a serious hypoglycemic event means less worry about hypoglycaemia unawareness, and blood sugar dropping over night when individuals are unconscious.


Given that dogs are signalling through closed doors, it is assumed that the dogs smell something that alerts them to a change in the physiology of their owner (as opposed to behavioural cues, as is believed to be the case with seizure alert dogs). There are many companies that have taken advantage of this supposed ability, and have trained Diabetic Alert Dogs (DADs) to sell to individuals with diabetes. 

In my own searches, I have found no company that publicly provides information as to how they train their dogs. However, according to recent studies (see Gonder-Frederick et al., 2013 and Rooney et al., 2011 below) these trained DADs dogs contribute greatly to the families of individuals’ with diabetes; they signal consistently and, consequently, significantly reduce the number of hypoglycemic events an individual experiences. 

Now, if it is in fact an olfactory cue that dogs use to identify a drop in blood sugar in their owners, one would expect that if you presented one of these trained DADs with the “scent” of hypoglycemia without the individual present (just like having the owner with diabetes on the other side of a door), the dog would still signal. 

Dehlinger and colleagues recently tested three DADs in a lab setting, presenting the dogs with human biological samples that were obtained identically to the way the samples used to train the dogs were obtained. In this study, none of the three dogs could pick out a hypoglycemic sample from a normoglycemic sample! DARN!

So what is it that these dogs smell? How is it that some DADs are accurate at signalling hypoglycaemia but evidently cannot signal in the lab? 

Enter ME! This is what I’m trying to figure out!

One possibility is that, at least in the study outlined above, the use of sweat samples was misguided. Maybe the volatiles are more strongly present in an individual’s breath. I am currently in the process of testing whether there is one channel more likely than others to expel the volatiles needed to detect a change in blood sugar, i.e. breath, sweat, or saliva. 

So far we’ve found that, after being trained to detect extremely low saliency scents, our dogs can detect and discriminate between human breath samples with incredible ease and accuracy (see the video of Koda discriminating between breath samples). 


Little Koda discriminating between breath samples. The jar that has the check mark on it is the target sample. The jar with the x+ is a different breath sample. When Koda first enters the room, he smells a jar that is the “sample” (it matches the target sample)... This is the smell we want him to find amongst the three jars that are closer to the camera. He chooses the right one!

Preliminary tests with patient samples suggest that our dogs can also tell the difference between breath samples taken from the same individual when their blood sugar was low, when it was normal, and when it was high (unpublished). 

Also, it’s possible that in the Dehlinger et al. (2013) study, the sample collection procedure was simply not sufficient enough to contain the volatiles produced during a hypoglycemic event. With the help of a fantastic chemist at Dalhousie (Dr. Peter Wentzell), we have perfected a procedure that coats cotton balls in silicone oil. This is believed to help contain the volatiles through the *magic of chemistry.  

*may actually be science, not magic - check with the chemists

Another potential is that these DADs are simply responding to a general stress response in the body. It’s possible that DADs (and untrained dogs who signal to their owners) are picking up on the physiological change associated with stress (changes in cortisol, adrenaline etc.). Kind of how people say animals can smell when you’re scared. 

If this is truly what’s happening, you would expect to see DADs giving a lot of false alarms. 

And in fact, personal communication with friends of friends who own DADs tell me that their DADs alert to not only hypoglycemic events, but to asthma attacks, anxiety attacks, etc. If you read carefully, few studies ask owners of DADs if their dog gives a lot of false alarm signals (dog signals to their owner and after the owner checks their blood sugar, they discover that they are not low). 

Isn’t this fascinating? 

The dogs I work with are incredible (shout out to the amazing owners that let me work with their dogs every week), and have incredible work ethic and sniffers. 


Our dogs are extremely motivated to work (because we make it super fun!). This is Nutella on her “break”. She doesn’t want a break. She wants to keep working! She’s whining and pawing at the door of the work room.


With the assistance of these amazing dogs, hopefully Dr. Gadbois and myself will be able to shed light on how exactly DADs do their job in the near future - I'll let you know how we go!


Cat Reeve
PhD Candidate
Dalhousie University
CANADA

Follow Cat on Twitter

Follow the Dalhousie Canid Behaviour Research Team on Facebook

Check out #DogsOfDal on Instagram

Further reading:

Brown S.W. & Strong V. (2001). The use of seizure-alert dogs, Seizure, 10 (1) 39-41. DOI: http://dx.doi.org/10.1053/seiz.2000.0481 

Dehlinger, K., Tarnowski, K., House, J.L., Los, E., Hanavan, K., Bustamante, B., Ahmann, A.J., & Ward, W.K. (2013). Can trained dogs detect a hypoglycemic scent in patients with Type 1 Diabetes? Diabetes Care (Observations), 36, 98-99. 

Fier, B.M. (2004). Morbidity of hypoglycaemia in type 1 diabetes. Diabetes Research and Clinical Practice, 65, 47-52. 

Gadbois, S., & Reeve, C. (2014). Canine Olfaction: Scent, Sign and Situation. In A.  Horowitz (ed.). Domestic Dog Cognition and Behavior. New York: Springer. 

Gonder-Frederick L., D. Warren, K. Vajda & J. Shepard (2013). Diabetic Alert Dogs: A Preliminary Survey of Current Users, Diabetes Care, 36 (4) e47-e47. DOI: http://dx.doi.org/10.2337/dc12-1998  

Rooney N.J., Morant, S. & Guest, C. (2013). Investigation into the Value of Trained Glycaemia Alert Dogs to Clients with Type I Diabetes, PLoS ONE, 8 (8) e69921. DOI: http://dx.doi.org/10.1371/journal.pone.0069921

Matyka K.A. (2002). Sweet dreams? - nocturnal hypoglycemia in children with type 1 diabetes, Pediatric Diabetes, 3 (2) 74-81. DOI: http://dx.doi.org/10.1034/j.1399-5448.2002.30203.x   

Wells D.L., Lawson S.W. & Siriwardena A.N. Canine responses to hypoglycemia in patients with type 1 diabetes., Journal of alternative and complementary medicine (New York, N.Y.), PMID: http://www.ncbi.nlm.nih.gov/pubmed/19040375

© Cat Reeve | Do You Believe in Dog? 2014

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