Emergency Services Available

Our Mission Statement

Thank you for checking out the Middle Country Animal Hospital, a warm, friendly, contemporary veterinary clinic located on Middle Country Road in Selden, and serving many surrounding Suffolk communities.


Our doctors, Evan Clark and Kerrie Moll Cavallo, are graduates of the Cornell University College of Veterinary Medicine, and have been providing high quality medical and surgical services in a cheerful, caring, and compassionate setting for over 25 years.


Our dedicated support staff are all pet loving pet owners, and we treat your precious furry and feathery family as if they were our own, offering comprehensive primary veterinary care, with the maintenance of happy, healthy, fit pets being our mission and our passion!


During a visit with one of our veterinarians, each of your concerns is addressed, a complete history of your pet's symptoms and behaviors is elicited, and a thorough 'nose to tail' physical examination, including a dental evaluation, is performed.


Vaccination protocols (based on where you live and your pet's lifestyle), dietary recommendations (based on your pet's waistline, or on any special requirements), parasite control measures, indications for spaying or neutering, and dental cleaning suggestions (based on the condition of your pet's pearly whites), are discussed and tailored to your pet's needs.


If your furry friend isn't feeling well, we will carefully explain our exam findings, and, if indicated, suggest a full range of diagnostic medical services, including blood panels, urine and fecal analyses, radiographs, EKGs, and/or ultrasound evaluations. And, if necessary, extensive surgical services are available, utilizing safe, state of the art anesthesia and pain management protocols. Your pet's return to good health is our primary focus, and we strive to create a diagnostic and treatment plan with which you are comfortable, and which best meets the needs of you both.


We passionately believe that a well informed, educated client is the most capable of making sound decisions regarding the care of their beloved pets, and as such strive to answer all questions, address all concerns, and instill confidence that, at the Middle Country Animal Hospital, your furry/feathery family is in loving, competent hands!


Drs. Cavallo and Clark have been serving the community at our Selden location, with the same degree of dedication, medical expertise, compassion, and enthusiasm since the inception of our practice in 1988. We are extremely proud of our long history of thriving pets and their satisfied human parents, and look forward to welcoming you and yours into our Middle Country Animal Hospital family!

Visit our veterinary practice in Selden, New York, or call us at (631) 732-0900 to schedule an appointment.
We are happy to provide more information about how we can serve you and your pet. 

Guide Dog Foundation for the Blind Valued Veterinary Partner | Member of Cornell Feline Health Center

Dr. Clark and Dr. Cavallo with their Dogs, Veterinary Services in Selden, NY
Exam Room, Veterinary Services in Selden, NY
Reception, Veterinary Services in Selden, NY
Lab & Full Service Pharmacy, Veterinary Services in Selden, NY
cat laying down Selden, NY
Twix, the Hospital Mascot, Veterinary Services in Selden, NY


Dog, Veterinary Services in Selden, NY

Cute Puppy, Veterinary Services in Selden, NY
Ollie Working the Desk, Selden, NY
Ollie Hanging
Ollie Writing Up Records
Cocker Spaniels Playing

 644 Middle Country Road, Suite D
Selden, NY 11784-2578

Call: (631) 732-0900

Hours of Operation:
9:00 a.m.–7:30 p.m.
Friday, 9:00 a.m. – 4:00 p.m.  Saturday, 9:00 a.m. – 1:30 p.m.