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Tarah Nixon, BS, CVT, dip. ABST

Elite Fear Free Certified

Low Stress Handling Silver Certified

Tarah is a Certified Veterinary Technician with a Bachelor’s of Science in Animal Science from the University of Arizona (2004). She returned to school to earn a Master’s degree in Animal Behavior (dip. ABST, 2020). 


During her career as a veterinary technician, Tarah has worked in emergency and critical care, she has been a technician supervisor in a large specialty hospital, led as a practice manager in general practice, and has been an educator. 

Tarah is Elite Fear Free Certified and a huge proponent of the Fear Free initiative; she even added Fear Free to the curriculum while she was an instructor in an associate degree program for veterinary technician students.

Tarah has also completed the Low Stress Handling Silver Certification Program. This program delves deeply into the often subtle ways dogs and cats communicate fear and anxiety, and trains how to handle pets in a relaxed, non-threatening manner.


Beginning at the young age of 6-years-old, Tarah has enjoyed training and showing her dogs and horse. Tarah also volunteers with Southern Arizona Mounted Search and Rescue (SAMSAR).


Lisa Wirth, BS, VMD

Veterinarian and Owner

Elite Fear Free Certified

PennHIP Certified

Dr. Wirth has a Bachelor’s of Science in Veterinary Science from the University of Arizona (2005). She returned to her birth state of Pennsylvania to attend the University of Pennsylvania School of Veterinary Medicine, earning her Veterinary Medicine Doctorate (2011).


Dr. Wirth has experience in general and emergency veterinary medicine; she has edited and illustrated for veterinary journals and conference proceedings; and she was also staff veterinarian and an instructor in an associate degree program for veterinary technician students.

Fear Free methods of working with your pets are incredibly important to Dr. Wirth. She became certified the first year Fear Free was offered and is Elite Fear Free certified.


Dr. Wirth decided when she was five-years-old that she was going to be a veterinarian, and clearly, her early childhood dream did not waver! She enjoys spending her free time with her husband of 17 years, three children (ages 6, 10, and 17), and two dogs (ages 4 and 11).

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Diana Garcia, AS, CVT

Fear Free Certified

Diana is a graduate of Pima Medical Institute's Veterinary Technology Program, where she received her Associate's Degree in 2017. She then passed her national and Arizona state board exams, becoming a Certified Veterinary Technician.

Shortly after graduating, she gained two years experience working in a veterinary emergency intensive care unit. Diana also has experience working in a busy general practice.

Diana is a Fear Free Certified Professional and is now working toward her Elite Certification. Diana believes strongly in using the techniques learned in Fear Free training to make veterinary visits as low stress as possible for pets.

In her free time, Diana dances with a local group in a variety of styles, including Mexican folklore. She also loves to travel and spend time with family and friends.

Born and raised in Tucson, Arizona, Diana has always been passionate about caring for animals. She has two dogs, Luna and Shay, and four cats, Anchovie, Simon, Blue, and Echo.