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.
Helping Your Pets Ace the Back-to-School Transition
Help your pets adjust to back-to-school changes by discovering expert tips on routines, enrichment, and managing separation anxiety.
Learn More »Our Clients Love Us

Amazing service.. great rates.. I drive almost an hour to have my pets go to them. So worth it
Kimberly Sanchez

We love Mountain Avenue Animal Hospital! We've been using them for our dogs for many, many years. The staff is very friendly, and knowledgeable. Great place to bring your pet when they need ...
David W

4.6
Rating on
Google Reviews!
