Updated as of 3/27/2020:

Due to current conditions, we will be instituting the following changes to appointment procedures: 

1) The front door to the hospital will be locked. No clients will be allowed in the building at this time.

2) We are happy to do curbside check-ins and medication/diet pick-ups, please call the hospital at (860) 633-8394 when you are in the parking lot and we will come out to you. 

 Until Further Notice: 

• We will be closed on Saturdays 

• We will only be seeing sick/emergency appointments

• No toe nail trims!

At this time, we will be running an 8am-3pm schedule, our daily hours are subject to change at anytime.

Welcome To Glastonbury Animal Hospital! Your Trusted Veterinarian in Glastonbury, CT

From walking to the park to going on adventures, we do everything with our pets. While our furry animals are so important to our happiness, we'll do whatever it takes to ensure they are in good health. From routine wellness exams to comprehensive health services, Glastonbury Animal Hospital is here to help. Our outstanding team and quality services ensure your companion animals are healthy and stays that way for many years to come. We are located in Glastonbury, CT, but we are proud to serve the entire surrounding area. Keep reading to learn more about our animal hospital, including information about our team, and the many exceptional services we offer.

Meet Our Doctors

We are happy to have four experienced veterinarians on staff who can solve all of your pet concerns.

Robert P. Cotthaus, DVM

Being a graduate from the University of Illinois College of Veterinary Medicine, Dr. Cotthaus holds a strong passion for helping animals live healthier lives. He is especially interested in the compassionate care in the use of laboratory animals in research and consults within the Biotechnology Industry.

Barry H. Marsh, DVM

Dr. Marsh received his degree from the Ohio State University College of Veterinary Medicine, and has been involved with the animal hospital since 1997.

Ellyn S. Kirk, VMD

Dr. Kirk is a Connecticut native and studied at the University of Pennsylvania College of Veterinary Medicine. She has always loved helping animals.  Dr. Kirk has two pets of her own.

Griffin B. O'Connor, DVM

Dr. O'Connor is a Connecticut native as well and graduated from Ross University in 2007. Before she attended school there, she completed her clinical training at Virginia-Maryland Regional College of Veterinary Medicine. Dr. O'Connor loves spending time with her family, which includes her cat Sushi and two dogs Bodhi and Sparkle.

Our Services

Given that we have four experienced veterinary specialists on staff, we are able to offer a wide range of services. Check them out below:

  • Immunizations
  • Wellness care
  • Internal medicine
  • Pet surgeries
  • Dental care
  • In-house laboratory
  • Pain management
  • Pharmacy
  • Microchipping
  • Emergency care
  • And more!

Your pet’s best interest is in good hands with our Glastonbury veterinarians.

Care from a Qualified Veterinarian in Glastonbury

Whether you're searching for preventative care or your pet is dealing with a health complication, our team can offer you the high level of care he or she needs. Located in Glastonbury, CT, Glastonbury Animal Hospital is here to help. Contact our dependable Glastonbury veterinarians today at 860-633-8394 to schedule an appointment.

Nail Trims are Monday through Friday, 10am-6pm, except between the hours of 12-2pm. No appointment needed.





Receive a FREE pre-anesthetic blood screen with every dental visit !($136 value!)

222 Boston Turnpike, Bolton, CT. P: 860-646-6134

993 North Main St, West Hartford, CT. P: 860-236-3275

730 Randolph Rd, Middletown, CT. P: 860-347-8387

**No matter which facility you choose, please be sure to call ahead of time to let them know that you are coming. Upon your arrival to the emergency facility, please let the receptionists know that your regular veterinarian is Glastonbury Animal Hospital, Glastonbury, CT.**

Nail Trims are Monday through Friday, 10-6, except between the hours of 12-2. No appointment needed.

Meet Our Doctors

Learn Who We Are

  • Robert P. Cotthaus , DVM

    Dr. Robert Cotthaus is a graduate of the University of Illinois College of Veterinary Medicine. A Long Island native, Rob came to veterinary medicine as a second career.

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  • Barry H. Marsh , DVM

    Dr. Barry Marsh is a West Hartford native and a graduate of the Ohio State University College of Veterinary Medicine. Barry has been with Glastonbury Animal Hospital since 1997, first part-time, then full-time since 2006.

    Read More
  • Ellyn S. Kirk , VMD

    Dr. Ellyn Kirk is a Connecticut native and graduate of the University of Pennsylvania College of Veterinary Medicine. After obtaining her undergraduate degree from Villanova University, Ellyn lived and worked in the Washington DC area.

    Read More
  • Griffin B. O'Connor, DVM

    Griffin O'Connor, DVM is a Suffield, CT native. She graduated from Ross University in 2007 after completing her clinical training at Virginia-Maryland regional college of Veterinary Medicine. She joined Suffield Veterinary Hospital in 2007.

    Read More


Read What Our Clients Say

  • "Dr. Cotthaus is always a pleasure to see. He not only takes great care of our dog, but he spends extra time talking to my daughter and answering her questions. She wants to be a vet and he helps foster this love of animals for her!"
    Amanda B.
  • "You have always been so kind and caring during the visits my cats have. How could I ever say anything negative about your practice!! Glastonbury Animal Hospital has been and will always be a Godsend to me and my animals!!!"
    David H.

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Business Hours


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-12:00 pm