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Helping Pets since 1981

Animal Hospital of Walnut

offers you and your four legged family member all of the

veterinary services

they need to have a long, healthy and comfortable life. Our medical, diagnostic, surgical and dental services will be delivered with the highest quality and best care and comfort we can. We will provide it with compassion for both you and your pet.

Cat Friendly Animal Hospital

We Accept Major Credit Cards We Accept Care Credit

ScratchPay Vet Care Payment Solutions

Pet Care Payment Plans
In-House Payment Plans

Our veterinarians, patient and client care team will help your family and your pet feel relaxed and safe. We will try our best to even make your pets visit fun with treats and belly rubs.

Whether you are new to the Walnut Valley or researching a veterinarian for your family pet we invite you to come and see our beautiful state of the art facility.

Dr. Damon Goldstein founded the Animal Hospital of Walnut in 1981 to offer exceptional care to
dogs and cats in Walnut,
Diamond Bar, and the surrounding areas.

Dr. Patricia Colley graduated UC Davis in 1992 and holds a Master's degree in Veterinary Preventive Medicine (MDVM) and has taught at Carrington College.

Dr. Karen Smolen attended Ross University, College of Veterinary Medicine on St. Kitts in the Caribbean and finished her Senior Clinics at Oklahoma State University College of Veterinary Medicine.

Dr. Charles Mintzer graduated from Cornell University Veterinary School and has been practicing in Southern California for 35 years.

We understand that your pet is like your child or best friend, and has a treasured place in your heart and life! Our goal is to honor that special bond between you and your special companion. Our team is sensitive not only to your pet’s needs, but to yours as well.

We are proud to be accredited by the

American Animal Hospital Association,

which sets the highest standards for Veterinary Hospitals and practices.

We serve the cities of Diamond Bar, Walnut, Covina, Phillips Ranch, Hacienda Heights, Pomona, Chino, Chino Hills, and beyond.


"I had a wonderful experience at the Animal Hospital of Walnut! I've never had a vet take so much care to make sure my kitty was comfortable and not scared. The staff was also friendly and nice to deal with! Awesome vet!" —Jena B., Riverside, CA via Yelp 7/5/2017

"Love the doctors here, we had to put our precious Bella down and they were so kind and understanding of my kids! I can't thank them enough on how they helped my kids understand that is was the best decision for Bella! Thanks!" —Starr S., West Covina via Yelp 3/10/2017
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