Ursa and Ruckus

Ursa and Ruckus

Ursa Acree, CPDT-KSA

CO-OWNER and behavior consultant

Ursa Acree is a Certified Professional Dog Trainer, Knowledge and Skills Assessed, and a Certified Fear-Free Trainer, originally from Louisville, Kentucky. Ursa began training in 2001 after getting her first "very own" puppy, Ruckus, a Belgian Tervuren mix. After she and Ruckus attended dog training classes together, Ursa was asked by the instructor if she would be interested in apprenticing - and she was. 

She soon began teaching group classes for a local chain of pet stores, offering basic through advanced obedience, Rally-O, nose work, and Canine Good Citizen classes. She was noticed by the Board of Directors of the Kentucky Humane Society, who hand-picked her to fill the recently vacant Behavior Manager position. Over the next four years, Ursa was tasked with growing KHS' external behavior department - responsible not only for bringing in revenue for the shelter, but also preventing pets from being relinquished for behavior problems. Working with thousands of dogs a year in group and private settings, she also earned her CPDT-KA in 2007. 

In 2010, Ursa was hired as the Behavior Manager for the Dumb Friends League in Denver, Colorado. With eight full-time staff and over a hundred volunteers, she oversaw nearly a dozen behavior programs designed to help relinquished dogs, cats, and other pets overcome behavior issues to make them more adoptable. With an intake of nearly 25,000 animals annually, she and her staff worked with nearly every imaginable behavior issue.

In 2013, Ursa and her family moved to Kansas to pursue the opportunity to own a farm. Meanwhile, she took a position with Hill's Pet Nutrition as a Behavior Research Technician at their nutritional research facility in Topeka, Kansas. There, she and the Behavior Team were responsible for the behavioral health and training of nearly 500 dogs, including husbandry, enrichment, behavior modification, and teaching scent and taste discrimination tasks. 

But, Colorado loomed large in their hearts, and in 2015 the Acrees returned to Denver, where Ursa now spends her time helping dog owners in their homes. While her passion is working with aggression, reactivity, and fear, she ultimately loves helping all owners make a connection with their dogs and to see them begin communicating in the same "language."

Ursa is, and always has been, committed to force-free methods, training without the use of fear, pain, or coercion. She believes in emphasizing and reinforcing desired behaviors, rather than waiting for dogs to make mistakes. By creating an environment in which dogs are eager to learn without fear, and incorporating reinforcement into everyday life, good behavior becomes a habit rather than a chore.

Ursa is a member in good standing of the Association of Professional Dog Trainers and the Pet Professional Guild, and is currently pursuing IAABC and CBCC certification. She is also the first Certified Fear-Free Trainer in Colorado.

Kimberly and Gixxer

Kimberly and Gixxer

Kimberly McRae, CPDT-KA

Co-owner and behavior consultant

Kimberly is a Certified Professional Dog Trainer, Knowledge Assessed, originally from New Albany, Indiana. Her passion for animals and learning theory has propelled her into a life of helping others understand how to communicate with their dogs.

Kimberly's initial exposure into dog behavior modification began with the adoption of her first dog, a 4 month old German shepherd mix in 2005.  She was eager and at times desperate to understand why her puppy would develop reactivity to other dogs while on leash.  

Over the years, Kimberly has studied the methodologies of industry leaders in positive reinforcement and behavior such as Ian Dunbar, Karen Pryor, Dr. Patricia McConnell, Jean Donaldson, Pat Miller, and Dr. Sophia Yin. In addition, Kimberly has taught puppy, manners, and reactivity classes. She is a member in good standing of the Association of Professional Dog Trainers and the Pet Professional Guild.

Inline with Canis Major's mission, Kimberly is committed to force-free methods, training without the use of fear, pain, or coercion.  She agrees that the power to control one’s own outcomes is essential to behavioral health and promotes Dr. Susan Friedman's findings that animals which have the tools and ability to make their own choices are more successful and consistent in exhibiting desired behavior long term. 

Kimberly has a Bachelor's Degree in Biology from Indiana University. Kimberly resides in Denver, CO, with her dogs Gixxer, Taco, and Hazel. She works part-time as a Behavior Technician for the Humane Society of Boulder Valley, working to enrich the lives of dogs in the shelter and address behavior issues to make them more adoptable.

Drew & Dog.jpg

Drew webster, CPDT-KA

trainer and behavior consultant

Drew is a Certified Professional Dog Trainer- Knowledge Assessed recognized by the Council for Certified Professional Dog Trainers. Drew specializes in understanding canine behavior and implementing effective and humane training programs to meet each individual family’s needs. His focus is teaching people to understand and appreciate their dogs' needs and to find fun and practical solutions which deepen the human-animal bond. Drew firmly believes that the relationship is the key to building confidence and teaching dogs to be successful. Drew's consulting experience includes developing and implementing training programs for the University of Denver’s Graduate School of Social Work, the Institute of Human Animal-Connection Canine Program, animal shelters, dog daycare and boarding facilities and AHAA Certified Veterinary practices.

Drew is a professional member of the Association of Professional Dog Trainers and the International Association of Animal Behavior Consultants, the Animal Behavior Society and he is enrolled in the Animal’s and Human Health Certificate Program at the University of Denver. Drew holds continuing education in high regard and is regularly attending workshops, seminars, and symposiums to make sure he is teaching the most effective and current techniques to his clients. 

kayla fratt, ACDBC

dog trainer


Kayla is an animal nut, an outdoor enthusiast, and a self-described "humongous nerd." Hailing from Ashland, Wisconsin, she earned a degree in Organismal Biology and Ecology with a focus on animal behavior from Colorado College in 2016. Kayla started training animals at a young age - first with homing pigeons and chickens, then with cats and eventually dogs. 

Kayla began training professionally in college. Since then, she's worked as a trainer for 5 years around Colorado. In addition to training, she currently works in the Behavior Department at the Dumb Friends League, where she does extensive behavior modification with fearful dogs and cats. Her passion lies with high-energy, rude, and reactive dogs, but she loves working with all species - cats and parrots included! Kayla currently lives with an unstoppable Border Collie, Barley, and a sassy parrot named Francis.

 Kayla is a member of the International Association of Animal Behavior Consultants as an Associate Certified Dog Behavior Consultant.