Guilderland Animal Hospital was founded in 1955 by Dr. John Brennan. Through the past six decades, Guilderland Animal Hospital has remained committed to offering pets and their owners the highest quality of medicine available.

Our Chief of Staff, Dr. Michael Casler, has been with Guilderland Animal Hospital since 1969! With the help of Dr. Casler and our talented and dedicated team, we have been an AAHA-accredited veterinary hospital since 1973.

We acknowledge the importance of the special bond between people and their pets. We strive to support that bond with state-of-the-art diagnostic equipment and multiple treatment options, along with client education.