Meet The Team

Gabrielle Walker-

Founder - Pack Leader - Pet Sitter

Gabrielle Walker (real last name)founder of Fit Dog Theory, is a professional dog walker, certified in canine behavior, pack management, safety and fight protocols, as well as pet CPR and first aid. Gabrielle is a team player who is dedicated to providing her clients the services and tools they need to provide an abundant life for her client's pets. She is patient and respectful with each animal in her care and treats them as if they were her own.

Professional Certifications

  • Graduate of Pawsitive Tails- Dog Walking Academy.

  • Insured and bonded with Pet Sitters Associates.

  • First Aid and CPR certified by Pet Tech.

  • Fit Dog Theory is licensed with the city of Walnut Creek.

Amanda Flores-

Dog Walker & Pet Sitter

I would like to introduce you to our new pack leader, Amanda Livi. Amanda has a high level of professionalism and integrity from past work experience. Amanda is very alert, caring, goes above and beyond, learns quickly and takes initiative with the dogs best interest always in mind. Amanda has a degree in Liberal Arts, and is an artist. She has lived with dogs her entire life and wants to adopt a border collie. She is from Texas, loves California weather and adores the outdoors. 

"My husband and I moved from Texas to the East Bay and it has been an absolute joy exploring the beautiful California trails with the pups at FitDogTheory! I am an artist who specializes in print making, acrylic painting, and graphite/charcoal and I find constant inspiration in the positive attitude the dogs always posess. It's impossible not to get caught up in their excitement when I pick them up for pack walks. Knowing that we are keeping each other fit is just the icing on the cake!"

-Amanda Flores 

Jen Smithey

Dog Walker 

Jen is a long time resident of Clayton and is familiar with many trails and parks in the area. She is a warm and friendly person with many years of customer service which enables her to work effectively with all kinds of people. She is a proud dog owner for decades and is comfortable around all breeds and temperaments. Jen has a very good memory, learns quickly, and is very thoughtful. Jen has a degree in Liberal Arts.

Dori Shafer

Dog Walker 

Dori was an executive assistant to the Vice President of Operations, Senior Vice President, and Vice President of Manufacturing for Dreyer’s Grand Ice Cream for 22 years. She is used to dealing with high-pressure situations often, takes directions very well, has excellent communication skills, and can work with and adapt to all kinds of people and personalities. Dori is a huge A's fan, has had season tickets for many years and works for the A's part-time during the baseball season. Dori loves small dogs and previously had a terrier mix for 13 years. She now has a “Grand-dog”, a Yorkshire Terrier named Coco. 

Ken Fujii-

Dog Walker

Ken Fujii is a licensed physical therapist, an avid trail runner, hiker and backpacker. Some of the places Ken has gone hiking and backpacking are South America, South and Southeast Asia, Japan, Europe and Australia. Ken is professional, caring, observant and patient. Ken has always had dogs growing up and recently adopted a lab mix puppy he named Starbuck.

"Working with Gabby and all the dogs at FitDogTheory is one of, if not the, highlights of my week! I often tell people half-jokingly that dog walking is my weekly form of therapy– but when every day with them begins and ends with their big toothy smiles, eagerly wagging tails, and the honest, unbridled energy and affection only a dog can possess. Also, as a big believer in the therapeutic effects that physical activity can have on the physiological, emotional, and cognitive health of both humans and canines alike, getting out on pack walks really helps keep both me and the dogs happy and fit. Most of all, being a part of the FitDogTheory family gives me the chance to cultivate joy– not only directly in my own life and the lives of the dogs, but also indirectly in others by ensuring the good health and well-being of their furry little companions."  


-Ken Fujii

 Contact Fit Dog Theory

Tel: (925) 477-7438

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© 2019 by FIT DOG THEORY.

We are licensed, insured, and bonded for your protection, and pet first aid & pet CPR certified for peace of mind! 
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