The History of Orange Grove Animal Hospital in Tucson

Serving the Tucson Community Since 1999

Orange Grove Animal Hospital has been dedicated to providing compassionate, high-quality veterinary care for pets and their families in Tucson since 1999. Our mission is to support a happy, healthy life for every patient through comprehensive medical care and client education.

We provide routine and advanced veterinary services for dogs, cats, birds, reptiles, and many exotic species. From small reptile hatchlings to large tortoises—and everything in between—we offer care that includes wellness exams, spay and neuter procedures, dental care, advanced imaging, and diagnostic laboratory services.

Meet the Owners: Drs. Walter and Holly Merker

In 2022, Drs. Walter and Holly Merker became the owners of Orange Grove Animal Hospital, continuing a long-standing tradition of veterinary care in the Tucson community. Both are graduates of the UC Davis School of Veterinary Medicine and have been serving the Tucson area since 2012.

Our Mission: Compassionate Care for ALL Species

We believe pets are family, and we are proud to provide care that reflects that bond. Our team is committed to treating every patient with compassion, respect, and individualized attention.

Orange Grove Animal Hospital was recognized in 2025 as “Best Veterinary Hospital” in Tucson by Lovin Life Magazine, reflecting our ongoing commitment to quality medicine and compassionate care.

Tucson’s Experts in Paws, Scales, and Feathers

Our team brings together a wide range of experience in both companion and exotic animal medicine. Dr. Holly Merker focuses on dogs and cats, while Dr. Walter Merker provides specialized care for exotic pets, including reptiles, birds, and small mammals. Together, they offer comprehensive care for a wide variety of species.

As part of the Tucson community, we understand the unique needs of local pet owners and are proud to provide trusted veterinary care for your entire animal family.

We Invite You To Experience The Difference at Orange Grove Animal Hospital!

rs. Walter and Holly Merker, owners of Orange Grove Animal Hospital in Tucson, AZ
Drs. Walter and Holly Merker, owners of Orange Grove Animal Hospital in Tucson, AZ Graduating from UC Davis School of Veterinary Medicine