Growing up in Monroe, Connecticut, Dr. Hayley Keller knew she wanted to become a veterinarian before kindergarten due to her love for animals. After earning a Bachelor of Science degree from Northeastern University in Biology and received a minor in Psychology, she received acceptance to the University of Pennsylvania School of Veterinary Medicine. During this time, she worked as an assistant at a veterinary hospital in Boston and volunteered at the New England Aquarium. She proceeded to also work as a research assistant working with African Grey Parrots.

While at the University of Pennsylvania School of Veterinary Medicine, Dr. Keller was the Co-President of Penn Vet Wine Club. She also traveled to the Dominican Republic on a volunteer trip and rescued a stray dog, who she brought home on the plane back.

Dr. Keller graduated from the University of Pennsylvania School of Veterinary Medicine in 2020. She is now an Emergency Veterinarian and has professional interests in Dermatology and Behavioral Science as well.

Dr. Keller shares her home with Muffin, a mixed breed dog who is 7 years old. She enjoys Broadway and other musical theater shows, wine tasting, and exploring Philadelphia.