Welcome to Mountain Avenue Animal Hospital!
Mountain Avenue Animal Hospital provides quality veterinary care for cats, and dogs in Ontario, CA and the surrounding communities.
We are committed to treating our patients with compassionate hearts, gentle hands, kind words, and superior care. Additional pet services include pet laser therapy and pet grooming.
For new clients, please call (909) 986-4548 today to make an appointment for your pet. For returning clients, please book an appointment online.
Six Ways to Support Your Local Animal Shelter Beyond Adoption
Learn about the best ways to support your local animal shelter and help create happier futures for your community’s pets.
Learn More »Our Clients Love Us

Professional serve and kind and caring. Doctor and staff treated our dog with kindness.
Joseph Garcia Sr.

Clean friendly not expensive.
Elisa Gonzalez

4.6
Rating on
Google Reviews!
