Our caring and compassionate veterinary care team!

Your pet is important to us. We want your experience here to be a positive one, filled with warmth and understanding. Kindness and compassion are hallmarks of our clinic, and we pride ourselves on offering some of the best veterinary care around. We hope you’ll allow us the opportunity to become part of your family as much as you’ll became part of ours.

Please call us at (519) 653-4411 to speak to one of our caring staff members!


Veterinary medicine is the perfect combination for someone who loves animals and science. I value the special bond between my patients and their human family members. I love meeting new clients and their pets. I am honoured to guide, support and educate my clients in caring for their pets’ overall health and happiness. I strive to make each visit a positive one. I continue to improve my medical knowledge to ensure the best possible care for my patients.

I share my love of hiking and movies with my two lovely daughters when I’m not out dancing, or answering to the demands of my sweet cats Walter and Nessa, and the ever mischievous Kat.


I’ve always loved animals, science, and meeting new people, so it was an easy decision to dedicate my life to veterinary medicine. Each patient is important to me and I value the relationships that I build with their families. I focus on preventative medicine and like to think of my style as gentle, warm and caring. Trust is important in this line of work and I don’t take that lightly. While they’re in my care, your pet is as important to me as they are to you.

I have a wonderful husband, Tim, three great kids, and a house full of pets. Right now we have four dogs, one cat, two birds, and a brood of chickens. There’s never a dull moment.

“Be patient, be kind. We are all dealing with life in our own way”


Dr. Marco Mazzocco received his Doctor of Veterinary Medicine in 1999 from the Ontario Veterinary College. He also received a Bachelor of Science degree from the University of Guelph.

After graduation he completed an intership in small animal surgery, medicine and critical care at the Veterinary Teaching Hospital at the Ontario Veterinary College. During this intense year of medical training he got the chance to work with world renowned specialists in surgery, internal medicine, critical care, cardiology and oncology.

He has continued his training in Florida and at Colorado State University in Fort Collins, Colorado in minimally invasive surgery and has brought endoscopy and laparoscopy to private practice in Guelph.

His furry family includes two yellow Labrador retrievers and two rescue cats.


Chris is a registered veterinary technician and our hospital manager. She is celebrating 25 years at Pioneer Pet Hospital! Here is what Chris has to say about her work…

“I love my Pioneer Pet Hospital Family! That includes those I work with and those who bring their pets to us for care. Knowing our clients so well is something that makes Pioneer so special to me. The connection over partnering in their pets care is so wonderful. I love animals but I also love helping people who love animals! I have always had a strong passion for animals, I drove my parents crazy with my menagerie of pets I had as a kid. When I am not working at Pioneer, I spend my time on my second animal passion, running a national animal charity, the Canadian Animal Assistance Team. We help to bring volunteer veterinary services to remote communities in need, it is great to help those animals that would otherwise have no access to veterinary care. I also still surround myself with a menagerie, with 2 dogs, 3 cats, 2 horses, and 10 miniature donkeys! It keeps me busy!”


Natalie is working hard in university to complete her Bachelor of Science degree and is hoping to someday be a veterinarian. Natalie works as one of our veterinary receptionists, our veterinary assistants and as an animal care aide. She has two lovely rescue dogs, Peanut and Butter that she spends her spare time with.


Kaitlyn is our veterinary receptionist well as serving as one of our veterinary assistants. Kaitlyn has always loved animals and she feels truly lucky to be in a career that allows her to work with them on a daily basis. She especially enjoys interacting with our clients and getting to know their beloved pets. Outside of work she enjoys spending time with family and friends and her beautiful kitten Finn.