• New Special!
    Buy 2 doses of Bravecto and get $10 rebate!
    Buy 4 doses of Bravecto and get a $25 rebate!
  • DROP OFF SERVICES: Click on our drop off services link to find out how this convenience works!
  • Fear Free Practices
    Our clinic utilizes fear free practices for the utmost care of your pet.
  • Grooming
    Make your appointment today! Please ask about our Grooming Services too!
  • The Finest In Veterinary Care
    We are dedicated to providing excellent care. Call to learn more.

Contact Us

.White Marsh Animal Hospital 

Welcome to White Marsh Animal Hospital
Your Veterinarian in White Marsh MD
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.

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.

Great News: We have a new groomer! Christann Keck is a professional groomer who can pamper your pets. Grooming is available Monday-Friday by appointment drop off only.

We now carry Bravecto!  

We now carry Bravecto!  Bravecto comes as an oral chew treat for dogs and a topical application for cats. Bravecto offers 12 WEEKS of flea and tick protection for dogs and 8 weeks for cats. There is also an online rebate: buy 2 doses of any size and receive an $10 rebate, buy 4 doses of any size and receive a $25 rebate.

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 #3 & 4
White Marsh MD 21162

(410) 335-8400

Meet Our Skilled Team

Learn Who We Are

  • Susan H Brennan

    Dr Susan Brennan is a Maryland native. As a small child she was always fascinated by animals and at a young age decided to pursue veterinary medicine. She graduated from Virginia Tech with a BS in Biology and subsequently graduated from VA-MD Regional College of Veterinary Medicine- Go Hokies!!! Following graduation she spent several years as an associate vet prior to owning a successful small animal practice in Glen Burnie.

  • Lexi Bobadilla

    Lexi started with us in July 2018 after working at a dog kennel. She is actively pursuing her degree as a registered Veterinary Technician through CCBC of Essex. Lexi got a Great Dane puppy named Nova, and later realized she is bilaterally deaf and epileptic. Due to Nova's disabilities, her interest sparked even further in helping animals with special needs. She resides in Abingdon with Nova.

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    Excellent caring facility. We love all that work there. Very compassionate. Our mobile vet told us about WM Animal Hospital. So glad she did.

    Tom L.

    I know when my my dog walks in that building she is in the best hands!! Dr.Brennan is amazing and truly Cares about your animal!! If I could give this place 1,000 stars I would!! I am so blessed to have this team on my dogs side!!

    Harmony S.

    I love this clinic. They staff is intelligent and helpful, and Dr. Brennan is the only vet i trust with my pets. My dog, snoopy was severely diabetic and was in dire need of care. They got me in quickly and took such good care of him. I will continue to come here with my pets forever.

    Shannon M.

    Dr Brennan & staff are wonderful. Friendly, polite & caring.

    Vicki C.

    My dog Zoey became very sick early on into Covid and I wasn't able to get in touch with our regular vet. I called White Marsh and they were able to get her in for an appointment the same day. Dr Brennan had a quick diagnosis of what was wrong and got my dog healthy again. We have switched to White Marsh Animal Hospital as our regular vet as Zoey needs continued care for her diagnosed illness. Over the past several months I have not had a single bad experience. Every employee is pleasant and seems to genuinely care about Zoey. I can't recommend them enough!


    I have 14 y.o. deaf rat terrier. He was staggering from pain. I got an appointment quickly. The doctor couldn't have been more caring or thorough. My baby is feeling better. Thank you Dr. Brennan! All of the staff is very caring and attentive.

    Jeanette L.


Find us on the map

Office Hours

Our Regular Schedule

White Marsh Animal Hospital


8:00 am-5:00 pm


7:30 am-7:00 pm


8:00 am-5:00 pm


8:00 am-7:00 pm


8:00 am-5:00 pm


8:00 am-1:00 pm