Dr. Ivan Bos – Veterinarian/Owner

Dr. Ivan Bos was born and raised in the Niagara Peninsula. His passions for animals at a young age led him to pursue a career in veterinarian medicine.

After graduating in 2001 from the Ontario Veterinary College in Guelph, Dr. Bos worked in two mixed animal practices in the Niagara Region. He then purchased a small animal practice that he operated and practiced veterinarian medicine for five years before starting Balfour Animal Hospital in the fall of 2011.

Dr. Bos enjoys the interaction and development of relationships with clients and their pets that a small animal practice offers. In addition he strives to provide exemplary veterinarian medicine in a compassionate and professional manner. His interests include internal medicine and orthopedics. Dr. Bos is one of the few veterinarians in Ontario that is certified to do Stem Cell Transplant Therapy. Dr. Bos also has a gift and love for operating and maintaining a small business.

Dr. Bos’ wife, Melissa and two children, Kaelyn and Jacob also enjoy spending time at the clinic…don’t be surprised if you see a few junior helpers from time to time!

When not at the clinic, Dr. Bos enjoys spending quality time with his family. They love caring for their pets (2 dogs, 2 cats, and 2 horses) as well as playing board games and going camping. Dr. Bos’ Yamaha FJR motorcycle is a close second to his family!


Sherri Visser – Veterinary Technician/Office Manager

Sherri was raised in the Niagara Peninsula. As a young girl she had a true love of animals and a drive to care and nurture them.

Sherri graduated from Centralia College in 1985 with a degree as an Animal Health Technician. Since then she has been working in her field for over 30 years. Sherri has an exceptional talent in providing individualized and compassionate care to each and every patient and their owner. Her expertise in all areas of veterinary medicine, hard work, dedication and management skills are enormous assets to Balfour Animal Hospital.

Sherri lives with her husband, Bill, and her beloved golden retrievers, Lily and Jewlz. Sherri has four children, Jade, Brayden, Joshua and Bradley but they don’t count any more because Sherri is now a grandmother to Gabby, Noah and soon to be born Baby Cal!

Sherri’s hobbies include breeding golden retrievers, grooming, and camping with friends and families. She has recently embarked on an adventure as a part time sales consultant with the Rodan and Fields skin care line.


Sharon Dawson – Veterinary Technician

Sharon has spent her whole life in the Niagara Region. She has had a love of animals for as long as she can remember, and has always wanted a career in veterinary medicine.

Sharon graduated in 1991 with honors from the Animal Health Technology program at Centralia College and has over 25 years in the veterinary field. Her first clinic experience was in 1986 as a Co-Op student. This is where Sharon and Sherri first met!

Sharon’s strengths as a technician include lab work and diagnostics, surgery, and of course providing the best care for each and every patient. She also has a keen interest in feline medicine. Her organization and efficiency will be very beneficial to the clinic.

Her busy life outside of the clinic involves raising her 2 sons, Jack and Noah, spending time with her significant other Chris and his son Luke, and snuggling with her beloved kitty Watson. Sharon has always been involved in sports. She currently enjoys running, playing Co-Ed hockey and has recently tried some obstacle races. Her hobbies include tinkering in the garden and geocaching!


Melissa Bos B. Kin – Office Administrator

Melissa is first and foremost a wife to Dr. Ivan Bos and mother to their two children, Kaelyn and Jacob.

Melissa graduated from McMaster University in 2001 with a Bachelor of Kinesiology. After two years of teaching she has been mainly a stay at home mom. She has always had a love for animals and therefore an interest in Dr. Bos’ work.

Melissa has worked in different capacities alongside her husband including receptionist work, animal care, software implementation and training and website design and development. She enjoys interacting with clients and their pets and making their visits as comfortable as possible. Her organization skills and dedication are beneficial to the team at Balfour Animal Hospital.

When not at the clinic Melissa enjoys spending quality time with her husband, Ivan, and children Kaelyn and Jacob, volunteering and substitute teaching at school and in youth programs at church, and enjoying the family’s small hobby farm. She quite often brings the family pets, Willow and Roxy, to the clinic to visit everyone!