Ark Valley Animal Hospital

La Junta, Colorado's #1 Veterinary Hospital

Preventive Medicine * Vaccines * Boarding Services * Medical/Surgical and Emergency Care

Hours of Operation:

Monday - Wednesday & Friday
8 a.m. to 5:30 p.m.


8 a.m. to 12 p.m.

24-Hour Emergency Answering Service

(719) 383-2824





Tracy L. Taullie, DVM - Veterinarian
Dr. Taullie graduated from Colorado State University in 1995. She worked nights at a large 24 hour hospital in Omaha, Nebraska for a year and a half before returning to Colorado. She worked in Denver, Colorado for another year and a half. She came to the Arkansas Valley in 1998 with her husband Darrin. They moved onto a small farm in Sugar City. She worked for Colorado Vet Clinic for five years before opening Ark Valley Animal Hospital. She now lives in La Junta with her husband and two beautiful little girls. She designed and had this beautiful new hospital built in 2005 and she continues to grow and practice high quality small animal medicine at Ark Valley Animal Hospital.

Karen L. Donisthorpe - Office Manager
Karen joined our staff in march of 2003 as the office manager for Dr. Taullie. Karen manages the administrative side of the practice. Born in New York and raised in New York and California (moved around a lot as a child); she graduated from high school in Huntington Beach, California. She went back to school when her youngest son started kindergarten. She graduated from Pueblo Community College with accounting and secretarial certificates. Karen also has a background in computers, some programming and data conversion experience.

Aimee Ritter - Lead Veterinary Tech
Aimee has been working at Ark Valley Animal Hospital since 2003. She was born and raised in La Junta, Colorado. Aimee assists in surgery, performs dentals, and assists in the exam room, amongst many other things. Aimee is an animal enthusiast with four dogs (Seamus, Dakota, Bandit, and Sox - pictured), two cats (Mama and Motor Mouth), two horses and a donkey (Sweet Cheeks, Thunder, and Nester).

Jo Simmons - Lead Receptionist
Jo began working as a receptionist for a mixed veterinary practice in 1998. She has worked for Ark Valley Animal Hospital since 2003. Born and raised in Gunnison, Colorado, she and her husband Rich, ranch south of La Junta where they raise registered quarter horses and corriente cattle. Jo is also an animal enthusiast with three dogs, two cats, and an ornery cockatiel. As a life long lover of animals, Jo likes people, and enjoys her job very much.