STAFF

The P.E.T.S. Staff works tirelessly to implement the P.E.T.S. Mission in every task they take on. Customer service means making sure you love your visit. It also means making sure your pets are cared for like family. When it comes to your furry family members, our staff would probably take each one home if you’d let them.

Wichita Falls

Leslie Harrelson

Founder Emeritus

Leslie Harrelson founded P.E.T.S. Low Cost Spay and Neuter Clinic in July of 2007. Leslie graduated from Midwestern in 2000.

Amber Gilmore

President & CEO

Amber Gilmore is a proud Texas Tech University graduate (BA, 2004) with a lifelong passion for animals. Amber’s commitment to animal welfare led her to serve on the PETS board from 2018 to 2023, providing valuable insight into the organization’s mission and operations. She went on to serve as Executive Director of WF from 2023 to 2025 and became CEO of PETS in January 2025. Amber’s love for animals is not just professional—she shares her home with three cats and one dog, reflecting her personal dedication to the pets she serves every day.

Outside of work, Amber enjoys spending time with her pets and staying active in soccer, both coaching and refereeing. She is driven by the belief that helping animals and supporting their families makes a meaningful difference in the community, and she brings that passion and experience to every aspect of her work at PETS.

George Tipton

Director of Marketing and Development

George Tipton came on as a P.E.T.S. Director in May of 2017. George graduated with a Bachelor of Fine Arts from Midwestern in 2003 and a Master of Science in Internet Marketing in 2015. He works for all branches of PETS Clinic wearing multiple hats, including creating and maintaining the website, digital ads, analytics, and managing social media. He also manages fundraising strategy, donor software, donor communications, clinic software, technical processes, and technical training.

Dr. Tammen

Veterinarian

Dr. Tammen received her Doctor of Veterinary Medicine degree from Texas A&M. She is the Chief Medical Officer at PETS Clinic and our spay/neuter Queen. Dr. Tammen has been with PETS since our very first day. Dr. Tammen is the savior of unwanted pets filling her home with those discarded by others or deemed unadoptable. She loves estate sales, pickles, and family. She has a very large family including a twin sister and dozens of nieces, nephews, and great-nieces and great-nephews.

Dr. Rouillard

Veterinarian

Dr. Rouillard received his Doctor of Veterinary Medicine degree from Oklahoma State University. He practiced as full-service vet for 22 years in Wichita Falls. Currently, Dr. Rouillard splits his time between PETS and ABC, a spay and neuter clinic in Lawton. You will also see him at Animal Hospital in Wichita Falls. Dr. Rouillard joined our PETS family in 2008. He is a highly skilled surgeon and resident encyclopedia. We have yet to discover anything he doesn’t know. Dr. Rouillard is the friendliest person you will ever meet and possibly the proudest father. He has a son, daughter, and wife of 30 years.

Dr. Brown

Veterinarian

Dr. Brown received his DVM from Colorado State University where he also served as a police officer before becoming a veterinarian. He has been married to his beautiful wife Kathy for 34 years and is the proud father of 2 daughters. Dr. Brown owned his own practice in Oklahoma for 10 years but has also worked in Alaska and Colorado. Dr. Brown currently lives in Colorado and blesses us with his humor and surgery skills one week of every month. Dr. Brown loves excitement. When he isn’t working as a vet, you will find him flying around in his powered parachute or on his motorized skateboard.

Dr. Templer

Veterinarian

Dr. Templer graduated from Oklahoma State University with a Doctorate in Veterinary Medicine. She has 5 dogs at home plus a foster dog. She chose our clinic because she “loves and admires the PETS family, professionalism, and mission. In her spare time, she enjoys hiking and photography. She also makes incredible jam from her family’s orchard in Oklahoma. If you have the pleasure to meet Dr. Templer in person you will see her kind, patient, and compassionate nature truly shine. She gives 150% of herself to every pet she sees.

Dr. Barrio

Veterinarian

Dr. Barrio graduated from veterinary school at UNAM in Mexico City in 2018. She has experience in dogs and cats, but also has a Masters degree in wildlife, specializing in opossums. She likes to spend her free time doing acrobatic sports and dance activities. She also enjoys hiking and everything that has relation with nature, such as camping, hiking and long walks.

Dr. Dunivan

Veterinarian

Dr. Dunivan received her Doctor of Veterinary Medicine degree from the University of Missouri. Over the past 14 years, she has practiced in North Carolina, the UK and Canada. She and her husband moved here from Alberta with their daughter in July 2023. In her free time she enjoys playing basketball and snuggling with her two cats. Dr. Dunivan has a special interest in dentistry and internal medicine. She is thrilled to be a part of the PETS family and looks forward to helping members of this community and their pets.

Dr. Burke

Veterinarian

Dr. Jaclyn Burke began her journey with PETS in 2017 and also volunteered with the Young County Humane Society. She earned her DVM from Ross University School of Veterinary Medicine, graduating Magna Cum Laude, and completed her clinical rotations at Oklahoma State University with a focus on shelter medicine.

She shares her home with several rescued pups. In her downtime, you’ll find her hanging with family and friends, gaming, or back at the shelter in Graham.

When asked why she chose to work at PETS, Dr. Burke said, “Every pet deserves access to affordable veterinary care. I aim to keep dogs and cats out of shelters. I love that PETS facilitates helping shelters and rescues.”

Itzel Mandujano

Vet Tech

Itzel Mandujano is another gift from Mexico and graduate of UNAM. She and her precious furbaby, Chewbacca aka Chewbie are ready to serve you and your pets. Dr. Mandujano has 5 years experience and when she’s not spending time serving your pets, she and Chewbie are on the go. They like to do everything together including long walks, hiking or just relaxing. Itzel also enjoys painting and playing basketball. Licensed in Mexico, Itzel is working on gaining licensure in the United States.

Juan Daher

Vet Tech

Juan Daher graduated from UNAM in Mexico City. He completed his in-depth studies in medicine and surgery of dogs and cats. He is accredited by the Mexican Federation of Zootechnical Veterinary Doctors and has 11 years of experience practicing, in addition to a Masters degree in Production and Animal Health Sciences with a specialty in Disease Ecology and One Health mainly tracking tick-borne zoonotic diseases in wild and domestic carnivores. He has worked in zoos in Mexico promoting animal welfare and environmental enrichment. He loves all animals and is happy to dedicate his life to the health and rights of those who cannot speak and will be happy to help any animal and person that requires it because we are all together in this world and no one can exist without the others. No matter what, we are pieces of the same puzzle. In his free time, he enjoys reading, riding his motorcycle, trekking, camping, fishing, photography, poetry, watching movies and watching birds. Licensed in Mexico, Juan is working on gaining licensure in the United States.