McClelland Small Animal Hospital

  • Dr. Matthew Souza


Our address

455 Ellicott St., Buffalo, NY 14203, USA
(716) 847-0181

Hours of Operation

8:00am, 7:00 pm
8:00 am, 7:00 pm
8:00 am, 6:00 pm
8:00 am, 6:00 pm
8:00 am, 6:00 pm
8:00 am, 12:00pm
Closed, Closed

Accepted Payment Methods

  • Mastercard
  • Visa
  • Cash


  • Boarding
  • Primary Care
  • Surgery- General

We're pleased to offer the following services in our Buffalo Veterinary Clinic:

Wellness care and vaccines:  Annual visits and preventative care help pets live longer and healthier lives. 

Microchip implantation:  Accidents happen and pets sometimes get loose. Make sure your pet always finds their way home.  Chips can be implanted during a routine wellness visit, or while your pet is here for other services.

On-site pharmacy and laboratory:  When a diagnosis just can't wait, our in-house lab can provide the information we need in just a few minutes.  We keep many common veterinary drugs in stock as well to make sure your pet has everything they need.

X-rays and ultrasound:  Imaging is a powerful way to gain insight into a patient's symptoms. 

Soft tissue surgery :  Our operating room is equipped for a wide variety of procedures, from elective spaying and neutering to emergency surgery and everything in between.

Orthopedic surgery:  Cruciate ligament injury is very common in active dogs.  We perform cruciate repair surgery as well as basic fracture repair.

Dentistry:  Healthy mouths mean healthy pets.  We offer dental cleaning and additional care to keep your pet's teeth in tip top shape.

Boarding and Grooming:  Our team of professionals will keep your pet looking their best and watch over them when you're away.


Our appointment book is computerized which allows us to efficiently make appointments for you and your pet. Our receptionists and team will attempt to accommodate all requests to the best of our ability. Emergencies are accepted anytime our clinic is open. If you feel you have an emergency with your pet, please call us or come to the hospital immediately. If possible it is best to call before coming in so that a staff member can advise you on your particular emergency.

Types of Pets Seen

At McClelland Small Animal Hospital, we can care for many types of pets:

  • Dogs
  • Cats
  • Ferrets
  • Rabbits
  • Pocket Pets

Emergency & Urgent Care

We have a veterinarian and personnel on duty 6 days a week who are trained and equipped to handle any urgent care your pet has. Usually an emergency team consists of at least one veterinarian and several technicians working together to save a pet's life. Emergencies can be things such a rat bait poisoning, hit by car, and chocolate ingestion. If you ever feel that your pet needs emergency treatment do not hesitate to call or come in immediately. If possible it is best to call before coming in so that a team member can advise you on your particular emergency.

We are also available for urgent care when the condition is not life-threatening, but you feel your pet needs to be seen before you are able to get an appointment. Our veterinarians will work to "squeeze" you in between scheduled appointments. When you arrive, our receptionists will be able to give you an estimate on how long you may have to wait in order to be seen.


McClelland Small Animal Hospital accepts payment via cash, MasterCard, Visa, Discover or Care Credit. So that we can continue to provide you high quality service utilizing the best medical technologies, we request that payment be made at the time services are rendered.

We provide estimates for all surgeries and hospitalizations. If you have not received an estimate, you are welcome to request one at any time for your expected charges.


McClelland Small Animal Hospital offers discounted services to local area rescue groups. Pre-approval is required to qualify for the rescue group discounts, please call us for more information.

Dr. Matthew Marc Souza was born and raised in southeastern Massachusetts.  He received his Bachelor of Science degree, with a major in Animal Science, from the University of Massachusetts at Amherst, then went on to receive his Doctorate of Veterinary Medicine from Ross University School of Veterinary Medicine.

He moved to western New York soon after graduation to practice small animal medicine and surgery in the City of Buffalo.  Within 5 years of graduation, he was offered the Hospital Director position at McClelland Small Animal Hospital, where he is currently the hospital owner and President.  During his veterinary career in Buffalo, he has provided veterinary care not only to the community, but also, the City of Buffalo Animal Shelter and Second Chance Sheltering Network. 

Dr. Souza's most recent achievement was acquiring his private pilot's license.  When not practicing veterinary medicine, he is pursuing further training in instrument rating and commercial licensure.  Dr. Souza divides his spare time between family and friends, and of course, his numerous canine and feline friends.

Dr. Marylisa Reynders is a proud native of  Western New York. She attended Calasanctius School in Buffalo, New York, graduated from the State University of New York at Buffalo (Bachelor of Arts, Biological Sciences) and obtained her Doctorate of Veterinary Medicine from the New York State College of Veterinary at Cornell University (2002). Dr. Reynders attended Cornell University under an academic fellowship for feline medicine.

After completion of her doctorate, Dr. Reynders joined a busy companion animal clinic in the Buffalo, New York area, where she practiced small animal medicine for 7 years.  Dr. Reynders has recently pursued special training in the use of small animal diagnostic ultrasound at the Ontario Veterinary College, Guelph, Ontario.  She has also served on the Board of the Niagara Frontier Veterinary Society, and from time to time contributes to the Buffalo News Pet Column.

In March of 2009, Dr. Reynders joined the staff of McClelland Small Animal Hospital. McClelland Small Animal Hospital is the oldest existing practice in Buffalo's long history.  She strives to continue to offer thorough, practical medicine, with a friendly, educational approach.  With a strong interest in feline internal medicine and disease, she is a proud supporter and provider for the non-profit Second Chance Sheltering Network   Dr. Reynders is also a member of the American Association of Feline Practitioners.

Dr. Reynders resides in the Elmwood Village with her modern blue point Siamese named Aubrey. Aubrey has truly been the best companion and gift from her clients. Aubrey continues to be the subject of many tales of amusement at the office. When she is not practicing veterinary medicine, Dr. Reynders enjoys listening to jazz music, gardening, and cooking classic French cuisine. 

Dr. Souza,and Dr.  Reynders are affiliated members of the American Veterinary Medical Association,  New York State Veterinary Medical Society, Niagara Frontier Veterinary Medical Society, and the Western New York Veterinary Medical Society.

Betty Marlowe is the full-time groomer at McClelland's.  She attended the SUNY Delhi Animal Technology Program.  She has been grooming for 31 years.  She was fortunate enough to have owned her own grooming parlor for 15 years, before her addition to the McClelland staff.  She has worked on dogs, cats, ferrets, guinea pigs, turtles and an Arctic fox.  At one time she was an avid tropical fish breeder. Most often, she can be caught listening to Blues or Rock and Roll.  She shares her home with two dogs, two cats, and a turtle. 

Amy Fischer is our lead veterinary technician.  She performs several managerial duties for the hospital as well.  Prior to entrance in the veterinary field, she held several customer service positions.  She was born and raised in Hamburg, New York, and received her veterinary technician degree from Medaille College, in 1997.  She has been working as a technician at McClelland Small Animal Hospital for over 12 years. She loves all animals but has a weakness for ferrets, both domesticated ones, and their cousins, the Black Footed Ferrets.  

Katie Davis was born and raised in South Buffalo.  She obtained her veterinary technician degree from Medaille College as well.  Prior to coming to McClelland Small Animal Hospital, she worked at Orchard Park Veterinary Medical Center.  She currently owns 9 cats, and 2 dogs, all of whom are rescue animals.  She enjoys the small practice setting, always wears a smile, loves being an LVT, and looks forward to meeting you and your beloved pets.

Rachel Guarino attended Medaille College where she earned her license as a Veterinary Technician in 2012. Shortly after she graduated, she joined our team with excitement to work in a small practice setting. After growing up in the town of Elma, she keeps herself occupied there with her loving yet energetic boxer, Asia. She is currently continuing her education at Medaille College for a bachelors in Veterinary Technology and pre-vet. Rachel is very devoted to our family at Mcclelland Small Animal Hospital and looks forward to caring for your pet.

Betty Jean Murphy was born and raised in Buffalo. She attended the Delhi Agriculture and Technical school and has been a veterinary technician for 26 years. Betty has 4 dogs, 4 cats, 2 turtles, and 2 horses! When she is not working, Betty enjoys reading, singing, playing video games, and horseback riding. She and her husband love to go kayaking together.

Philip Hill comes to us after having worked in Florida as well as the Western New York area.  Philip strives to provide us with great customer service and front desk support, as our full time receptionist.  Previously he has worked as a veterinary hospital manager of a 2-doctor practice, in Florida.  He was instrumental in the 2005 relief effort for the animal victims of Hurricane Katrina, and took several weeks away from his full time position to help out.  He shares his downtown condo apartment with one spoiled Second Chance Rescue cat named Jillian.

Rumeal Rushon Wilhite attends Erie Community College for Biology. His longterm goal is to become a veterinarian. He developed a love for animals at a young age, when he used to take in stray dogs and cats, and unknowingly, their fleas. He attended Hutchison Central Technical High School for Bio/Chemistry. During his time there, he began becoming very active in community service, swimming, drawing, and acquired a black belt in the martial art of Gojo Ryu. He became part of the Omega Gent's mentoring program for young teen males, to help guide them to the past of Brotherhood, Scholarship and Community Service, which are the pillars upon which the organization stands. His household includes a Shephard-Collie mix named Rocket, one bearded dragon named, Tian, a salamander, newt, red-eared slider turtle, and two large algae-eaters. 

Joshua Hathaway hails from Holland, NY.  He recently completed    his studies at Medaille College to become a veterinary technician.  He joined our team in the fall of 2011, and hopes to fine tune his skills as a lisenced veterinary technician.  He resides with his mixed breed dog, Olive.  His spare time is taken up by his love for stock car racing at the Holland Speedway.  You can see Josh in his red Chevy Impala there.