Updated as of 5/11/2020:

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 will continue 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. 

BEGINNING TUESDAY MAY 26TH, 2020- We will begin seeing appointments from 8am-6pm.  

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.

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.

Marcy L. Nedder, DVM

Dr. Marcy Nedder was born and raised in Central Connecticut and received her Doctoral of Veterinary Medicine from Tufts University in 1996. At home Dr. Nedder manages her own farm which includes horses, chickens, sheep, and her rescued dogs. Her twin daughters and husband, who is also a veterinarian, keep her busy as well. She previously worked at Powder Ridge Veterinary Hospital for 3 years.

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. 

Please call our office to schedule a time to stop by for this!





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. Please call our office to schedule a time to stop by for this!

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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  • 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.

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  • 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.

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  • Marcy L. Nedder, DVM

    Dr. Marcy Nedder was born and raised in Central Connecticut. She received her Bachelor of Science degree in Nursing from the University of Rhode Island in 1985. She worked as a registered nurse in a Boston hospital prior to her veterinary career. Dr. Nedder received her Doctoral of Veterinary Medicine from Tufts University in 1996. She has practiced veterinary medicine in Boston and in various places in Connecticut. At home Dr. Nedder manages her own farm which includes horses, chickens, sheep, and her rescued dogs. Her twin daughters and husband, who is also a veterinarian, keep her busy as well. She previously worked at Powder Ridge Veterinary Hospital for 3 years.  We are very excited for her to join our team!

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Read What Our Clients Say

  • "Right on time for curb side drop off and super friendly staff. Dr. Nedder brought my dog right out to me after the visit to explain everything to me. Excellent first visit!!"
    Tammy S.
  • "Knowledgeable, professional and polite staff answer questions when you call. Dr. O’Connor is attentive, caring and honest in all interactions with you and she has a kind and gentle approach with animals."
    Cheryl H.
  • "I recently switched to this vet after moving. In such a short time, I had to bring my dog to the vet on three separate occasions because she is always getting into things, or is getting into trouble. Each time that I needed to have an appointment quickly, the vet was able to accommodate me and took wonderful care of my dog. It’s hard for me to drop my baby off anywhere, but I trust this vet. They have treated my baby very well. Thank you for your care and your accommodation!"
    Sara S.
  • "Everyone was helpful and professional. I appreciate Dr. Kirk coming out to the car with Marmalade after each visit. She answered all my questions and provided support in the best ways to care for a 19 year old pet."
    Sally R.
  • "This was Pippa's first visit with Dr. Cotthaus. Dealing with COVID and no clients inside, was easy for us, but probably not for Dr. Cotthaus. Everything was so professional and done well. The doctor came to our car multiple times to keep us up to date on everything. Not a small task with a mask on and on one of the hottest days of the summer. The staff was great and the process as easy as it could have been, given the conditions. Very happy clients."
    Lynn F.

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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