Introducing our NEW communication tool Pet Desk. Please download the app to request appointments and refill prescriptions. It is fast and free!

WELCOME TO White Marsh Animal Hospital


CALL US AT (410) 335-8400

If you live in White Marsh or the surrounding area and need a trusted veterinarian to care for your pets – look no further. Dr. Susan H. Brennan is a licensed MD veterinarian, treating cats and dogs. Your pets’ health and well being are very important to us, and we take every possible measure to give your animals the care they deserve.

White Marsh Animal Hospital is a full-service animal hospital and welcomes both emergency treatment cases as well as pet patients in need of routine medical, surgical, and dental care. Dr. Susan H. Brennan has years of experience treating serious conditions and offering regular pet wellness care. Beyond first-rate pet care, we make our clinic comfortable and calm, so your pet can relax in the waiting room and look forward to meeting our White Marsh veterinarian.

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Contact Us

Call or send us an email today! Our staff will respond as soon as possible.

Make An Appointment

We will do our best to accommodate your busy schedule. Schedule an appointment today!


We strive to provide complete care for our patients. Learn more about all the services we provide.


We are happy to offer a number of resources that enable you to learn about how to take better care of your pets. Please feel free to browse our site, particularly the informational articles. The best veterinary care for animals is ongoing nutrition and problem prevention, so becoming knowledgeable about preventative pet care is essential to the ongoing success of your animal’s health. If you have any questions, call (410) 335-8400 or email us and we'll promptly get back to you. Our White Marsh veterinary office is very easy to get to -- just check out the map below! We also welcome you to subscribe to our newsletter, which is created especially for White Marsh pet owners.

ALL CLIENTS!! Please make sure to verify we have the correct email on file for you, as this is how we will be sending out patient reminders for you in the future. Please call today to make sure we have your correct contact information so you don't miss these important reminders.

Request an Appointment

How Our Team Can Help

Our team of experts is here to make your experience high-quality so that you receive the best service in White Marsh.

Quality Services
Our staff is trained in the most up-to-date techniques and procedures to care for your pet.

Modern Equipment
We've invested in the newest equipment to deliver the best results. 

Friendly Staff
We pride ourselves on being friendly with all your pets, whether you've been with us for years or are brand new.
Individual Approach
No two pets are alike. We focus on caring for the needs of each individual animal.

Now Accepting New Patients

It's never to early to get your pet a comprehensive blood panel to be proactive about your pets health before they get sick.  We are excited to announce that our partnership with Idexx Laboratories is allowing us to bundle numerous tests into one package, depending on the age and health of your pet. There are packages for both cats and dogs of any age. The standard diagnostic profile includes a full chemistry panel that assesses organ function, a complete blood count to check for infection and anemia, a stool exam to check for intestinal parasites, and a urinalysis to check for infections and kidney function. The premium panel offers all of the above with the inclusion of a test that helps diagnose heart problems. The savings are amazing, so ask for details at your next visit.

Please browse our website to learn more about our animal clinic and the veterinary services we provide for companion animals in White Marsh and the surrounding areas. Read information in our Pet Library, view videos,  read testimonials, and find details about upcoming events. Please call our office today at (410) 335-8400 for all your pet health care needs or click here to contact us or to set up an appointment.

At White Marsh Animal Hospital, we treat your pets like the valued family members they are.

Dr. Susan H. Brennan

11450 Pulaski Hwy, White Marsh, MD 21162

NexGard Plus, 'The One You Want'


February is Pet Dental Month!

Save 10% on Dental X-Rays and Cleanings by booking an appointment!

Don't forget about your pet's annual lab work!

Call us at (410) 335-8400 to hear about the lab specials we are running for dogs and cats!


Find us on the map