All calls and emails returned the same day!
Contact us

About Us

Diamond in the Ruff founder Colleen McCarvill is an internationally certified professional dog trainer and behaviour specialist who is sought after by dog handlers and dog trainers across western Canada.

Diamond in the Ruff has helped thousands of dogs and dog handlers become better teams using gentle yet effective techniques based on sound research. Unlike other dog training programs, we use our hearts and our minds, not our hands, to treat all levels of problem behaviour and guide your dog toward being a happy, emotional healthy family member.

Being one of the first POSITIVE dog trainers, Diamond in the Ruff was founded by Colleen to give dog owners a kinder, more cutting edge approach to dog training. Since then we’ve expanded to offer private and group dog training in a range of short and long-term sessions in Edmonton, Stony Plain, Spruce Grove, St. Albert and surrounding areas.

Dog handlers everywhere trust Colleen because her extensive experience and education delivers immediate results.


Colleen’s dog training education includes:

Council for Professional Dog Trainers, certificate CPDT-KA
Animal Behavior College, honors graduate ABC-DT-MT
Attendance in all relevant Training and Behavior courses to continually maintain the highest level of current education and experience in the industry today. Colleen is never out of school in order to provide the most up to date service to all of her clients.

Colleen is also a Canine Good Citizen Evaluator CCGC-E and the Therapy Dog Evaluator for SJA in Alberta
Are you looking for a dog trainer? Edmonton, Stony Plain, Spruce Grove, St. Albert, Sherwood Park, Leduc, Beaumont and surrounding area dog owners turn to Colleen McCarvill’s proven dog training techniques to help with all kinds of dog behaviour. 


Sharon adopted a mixed-breed dog with Jas and initially relied on aversive training methods. After seeing her dog’s behaviour take a turn for the worse, she sought out a different trainer who used science-based training methods for fearful dogs.

After witnessing first-hand how force-free methods help a dog flourish, she was instantly sold on using these humane training practices with all types of animals. Not only did her dog flourish, she also strengthened her bond with her dog. Sharon really enjoyed seeing the successes of force-free training and behaviour modification when working with Colleen.

She knew she had to continue working with Diamond in the Ruff in any capacity. She enjoys every moment when working with Diamond in the Ruff clients and based on the reviews that we are consistently receiving, our clients love Sharon just as much.

Sharon is also very active in the rescue community and takes pride in helping families create a strong bond with their rescued dog. She has also gained several years of experience in working with misunderstood power breeds. Sharon has completed all of the required apprenticeship hours, and then some, while mentoring under Colleen.

With her experience in both private training and classes as well as her diligent studying and continued evolution as a dog trainer, Sharon has written and is awaiting results on her CPDT-KA exam. We are also awaiting Sharon’s successful pass of this International certification.


Jas relied on aversive training methods after his family purchased their first puppy, a Manchester/Jack Russell terrier mix. This resulted in a reactive and anxious dog. Years later, after adopting a fearful mixed-breed dog, he realized that aversive methods were not effective or humane. Since then, he has used force-free training methods backed by science which has resulted in a much more confident, happy and willing training partner.

After taking group classes and private sessions with Colleen with his own dogs, he started to realize he had a strong passion for dog training and rehabilitation. He became more intrigued on learning the science behind these methods and jumped at the opportunity to learn from one of the most respected trainers in the Edmonton area.

Jas has completed more than the required hours as an apprentice with Diamond in the Ruff in order to certify and has now written his CPDT-KA exam. Based on Jas’s continued excellent performance and positive reviews, we are anxiously awaiting what we know will be fantastic exam results. He also is a Certified Management Accountant.


To book, contact our Diamond in the Ruff’s Administration Team at




Skip to toolbar