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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

Thanksgiving Pet Safety Tips: Keep Your Holiday Paw-sitively Memorable!

Thanksgiving Pet Safety Tips: Keep Your Holiday Paw-sitively Memorable!

Keep your pet safe this Thanksgiving with these important pet safety tips. Learn more about Thanksgiving hazards for pets, and schedule a pet wellness appointment with us today.  

Learn More »

Our Clients Love Us

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I have utilized the services of this veterinary clinic on two separate occasions, once for the administration of Bravecta and once for vaccination services. On both occasions, my experience ...

Jeffrey Pinkerton

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Very professional

J. Briceño

4.6

Rating on
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Mountain Avenue Animal Hospital