N. Toronto Veterinary Behaviour Specialty Clinic

8705 Yonge Street
Richmond Hill, ON L4C 6Z1



Our Doctors

Dr. Sagi Denenberg

Dr. Sagi Denenberg graduated with Excellence in Academic Achievement from the Kosice Veterinary College in Slovakia. He relocated from Israel to Canada in 2003 and passed the North American veterinary licensing examination.

Sagi provides behaviour consults for owners with their pets including dogs, cats, horses, parrots and other exotic mammals. He is a diplomate of the American College of Veterinary Behaviorists, the European College of Animal Welfare and Behavioural Medicine and has passed his members certificate with the Australian College of Veterinary Scientists (Veterinary Behaviour).  Sagi is also an RCVS Recognised Specialist in Veterinary Behavioural Medicine. 

Sagi has done a number of behavioural studies including the effects of pheromones on learning and socialisation in puppies and a study of play toy preference in cats for which he was awarded the American Veterinary Society of Animal Behavior Excellence in Research Award. He also authored a number of articles and book chapters including the behaviour chapters in the Merck Veterinary Manual, senior pet behaviour and cognitive decline in the British Small Animal Veterinary Association manual and more. Sagi is a consultant on the Veterinary Information Network (VIN) providing other veterinarians with advice.  In addition to clinical duties, Sagi teaches students at the University of Bristol and is a frequent speaker in veterinary conferences in Europe and North America.

Dr. Gary Landsberg

Dr. Gary Landsberg graduated from the Ontario Veterinary College in 1976 and established the Doncaster Animal Clinic in 1976. Dr. Landsberg offers behavior consultation services for owners of pets with behavior problems. He is a diplomate and a past president of the American College of Veterinary Behaviorists (ACVB) and is also a diplomate of the European College of Animal Welfare and Behavioural Medicine. He is a frequent speaker at veterinary conferences around the world, and is a prolific author of research articles, behavior texts and book chapters. He is co-author of Behavior Problems of the Dog and Cat from Saunders (3rd edition, 2013), a book and CD of behaviour client handouts for pet owners from Lifelearn, the behaviour chapters in the Merck Veterinary Manual (together with Dr. Denenberg), and author of a chapter, Growing Old with Grace in the book Decoding your Dog written entirely by ACVB diplomates. Dr. Landsberg has also hosted his own TV show, Free for the Asking on the Life Network, and a pet show on CFRB and continues to appear regularly in the media. Dr. Landsberg is a behaviour consultant for veterinarians on the Veterinary Information Network (VIN), Vice President of Veterinary Affairs at CanCog technologies and the head of research and a practice certification veterinarian for Fear Free.   In the year 2000, Dr. Landsberg received the companion animal behaviour award from the American Animal Hospital Association and in 2014, the meritorious service award from the Western Veterinary Conference. Due to his current commitments and speaking schedule, Dr. Landsberg is not currently taking on new patients.