Meet Our Veterinarians

From the moment you call our office or walk through our door each person you encounter is connected in a specific way to your companion’s care. We pride ourselves in providing you and your companion animals the best possible care and attention. In doing so, our team is comprised of highly educated, specifically trained animal lovers who can answer all of your concerns and questions with confidence.

We have the highest percentages of Licensed Veterinary Technicians (LVT) on staff in hospital in our area. All of our LVTs and Veterinarians attend continuing education seminars throughout the year to ensure we stay up to date on all of the latest information and technology available to us.

We look forward to seeing you soon!


Dr. Kristin Walleck, DVM, Lead Veterinarian

Position here at Otterkill: Associate Veterinarian


Educational Background: University of Rhode Island Class of 2006, Bachelor of Science Major: Animal Science. Ohio State University 2013, Master’s in Public Health; Ohio State University 2014, Doctor of Veterinary Medicine. After graduation, she accepted an Associate position in Reno, Nevada and began practicing as a small animal general practitioner.

Number of family companions: 3

Name(s) and breed(s): “Princeton”-tabby cat; “Jinx”-Chihuahua/yorkie mix; “Groot”-American Staffordshire terrier.

Hobbies I enjoy: I enjoy being out in nature on my free days, going for hikes, birdwatching, anything involving a beach or leisurely water sport. I also love a good movie marathon, and exploring new wineries/breweries.

Special things I have done with animals: Some of my most memorable experiences were helping to deliver lambs in Undergrad at the University farm. I also enjoyed being a tropical and non-tropical birdkeeper in Florida for one summer.


Dr. Jacqueline Chaffer, DVM

Position here at Otterkill: Associate Veterinarian


Educational Background: University of Wisconsin-Madison, Wisconsin Class of 1999, Bachelor of Science Major: Bacteriology; St. George’s University School of Veterinary Medicine-Doctor of Veterinary Medicine, St. George’s Grenada, West Indies Class of 2008; Clinical Year: University of Minnesota-Twin Cities, MN.

Number of Family Animal Companions: 4


Name(s) and Breed(s): “Grayson”– Labrador mix; “Drake” – Pitbull mix; “Harvey” – DSH; “Slade” DSH.


Hobbies I enjoy: hiking, skiing, agility, gardening, and biking.

Special things I have done with animals: I did my externship at the Minnesota Zoo where I got to go behind the scenes during feeding for the Siberian Tigers, helped on a dental on one of the tigers as well; I did zoo rotations in my clinical year and helped assist the female orangutan with pregnancy issues as well as the female giraffe; I survived a Class 5 hurricane on the island of Grenada and relocated to North Carolina State University for a term while rebuilding in Grenada took place and tagged dolphins for research purposes.


“I love to be a part of the Otterkill Animal Hospital healthcare team because”: Everyone here genuinely cares for animals and people that love them!


Professional Memberships: American Veterinary Medical Association; New York State Veterinary Medical Society; Hudson Valley Veterinary Medical Association; Westchester Rockland Veterinary Medical Society (previously).

Dr. Haines

Dr. Melanie Haines

Dr. Melanie Haines is a 2013 graduate of the University of Liege Faculty of Veterinary Medicine in Belgium. She then completed the ECFVG program in 2015. In 2018, she completed the Chi Institute’s Small Animal Acupuncture program. Dr. Melanie is a Middletown native, fluent in French and Spanish, and she takes a special interest in holistic medicine and fear free veterinary practice. During her free time, she enjoys gardening, baking, knitting, and cuddling her rescue dog, Beau.