Our Veterinarians

Dr. Loo attended Ontario Veterinary College at the University of Guelph to receive her degree in veterinary medicine. She graduated in 1997, and joined the Markham Veterinary Clinic team shortly afterward. After working full-time here for nearly 17 years, Dr. Loo purchased the practice in December of 2014.

Medically, Dr. Loo is passionate about surgery and the way it challenges her mind. She’s also fond of interacting directly with pet owners during routine appointments, and loves developing personal relationships with her clients over the years. Last but not least, Dr. Loo enjoys going to work every day alongside her staff members—she truly feels that they are a part of her family.

Dr. Loo lives in Whitby with her husband Jason, their two daughters Emilie and Violet, and their son Sean. The family shares their lives with a cat named Mikey, who was adopted after Dr. Loo treated him for a urinary issue.

When she isn’t spending time with her family or tending to the needs of pets here at the clinic, Dr. Loo enjoys attending fitness classes at her gym to stay in shape physically and mentally. In the summers, she enjoys going to barbeques with friends and camping in the great outdoors.

Dr. Firth grew up in North York, Ontario as the middle of three children, and was constantly surrounded by wildlife thanks to the ravine located near her family’s home. As a teenager, she began working at a pet store and various animal clinics to gain invaluable experience—she would even ride along with large-animal veterinarians to learn as much as she could! Dr. Firth enrolled in the biological sciences program at the University of Guelph, then continued on to receive her Doctorate of Veterinary Medicine there. She moved to the Markham area shortly after graduating in 1988, then joined the Markham Veterinary Clinic family in the spring of 1989.

Dr. Firth considers herself lucky to be a part of well-trained, knowledgeable, and compassionate team of pet-care professionals. She particularly enjoys performing surgery, seeing the positive progression of young puppies and kittens, and educating clients about the best possible care for their furry friends.

Dr. Firth and her husband of 27 years live in Markham and have three college-aged daughters. They share their home with two cats named Oliver and Jake; Jake gets very vocal when mealtime comes around, while Oliver prefers to hop up on a kitchen stool quietly and allow his “brother” to take care of business.

In her free time, Dr. Firth enjoys staying involved in her children’s sport and artistic activities, skiing and biking with her family, and traveling. The Firths have had many great family trips—they’ve toured through Costa Rica, been swimming with dolphins in the Mayan Riviera, and gone whale-watching in Quebec and Newfoundland!

Dr. Leung’s first introduction to the world of animal care came during high school, when she began shadowing her family’s local veterinarian. Next, she started volunteering at another nearby pet clinic, working her way through the ranks as a Veterinary Assistant, receptionist, and even a Veterinary Technician. Dr. Leung studied veterinary medicine in Guelph to become a licensed veterinarian, then returned to her hometown of Markham to begin her professional career. Now, she’s an Associate Veterinarian here at the hospital!

Dr. Leung has special interests in soft-tissue surgery and behaviour modification thanks to the lasting relief that these techniques provide for patients and their loving owners. Most of all, she loves to educate eager new pet parents and watch the relationship between pet and owner unfold over the years.

Aside from her interests in veterinary medicine, Dr. Leung enjoys traveling to experience all of the new cultures and cuisines that she can. She’s also an avid hiker, and tries to go on at least one hiking trip per year with her dog, Mero.