Happy cats. Happy dogs. Thanks to science.

Zazie Todd PhD is the award-winning author of Wag: The Science of Making Your Dog Happy and Purr: The Science of Making Your Cat Happy. Here at Companion Animal Psychology, she's been inspiring people to have happier pets since 2012.

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Zazie Todd PhD with her dog Bodger and her two books Wag and Purr

In Canada, signed copies of Purr are available from Black Bond Books via this link: https://blackbondbooks.com/purr and Wag with this link: https://blackbondbooks.com/wag

“A digestible mixture of science summaries, expert opinions, anecdotes about Zazie’s cats, and practical tips. Purr is definitely a book your cat would want you to read!"—Dr. Sarah Ellis, co-author of The Trainable Cat and Head of Cat Advocacy, International Cat Care
"Zazie Todd, a psychologist and dog trainer, gives us the latest research and insights that can help you better understand your dog. Practical, compassionate, thorough — and based on science rather than wishful thinking — Wag is also a gift you should give to yourself and the dog or dogs in your life. I loved it!”—Cat Warren, NYT-Bestselling author of What the Dog Knows


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Select Recent Media

Sunday Morning, More ways to make your cat happy, Radio New Zealand, 25 September 2022

How to Make Your Cat Happy, Radio New Zealand Sunday Morning, 18 September 2022

Purr: What does it take to make your cat happy?, The Other End of the Leash, 12 September 2022

Purring is a love language no human can speak, The Atlantic, 7 September 2022

How to better understand your cat, Psych Crunch podcast, 6 September 2022

Is my cat happy?, an excerpt from Purr in The Wildest, 12 July 2022

The science of making your cat happy, Breakfast Television, 9 May 2022

The science of making your cat happy, CTV Your Morning, 5 May 2022

Support Companion Animal Psychology

Here at Companion Animal Psychology, I'm on a mission to help people have happier cats and dogs (according to science). It's open to everyone--and supported by readers like you.

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Praise for Companion Animal Psychology

"Coolest behavior blog on the planet"--Jean Donaldson, Academy for Dog Trainers.

"My favourite animal-related blog"--Patricia McConnell, PhD

"For your average pet lover, it can be hard to figure out the best way to make their animals’ lives better. Enter Companion Animal Psychology, a blog packed with research-based information on how pets think."--Erin Blakemore, Washington Post.

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Support Companion Animal Psychology with a monthly or one-off donation via debit, credit, or Paypal