Priority 4 Paws Mobile Surgery Unit Logs 100K Miles Serving Animal Shelters and Educating Students

Dr. Lyn Freeman pictured with Jane the dog before a spay operation

Dr. Lynetta Freeman checks the anesthesia for a dog named Jane before a spay operation. Priority 4 Paws, a Purdue Veterinary Medicine mobile spay and neuter unit, recently celebrated logging 100,000 miles. (Purdue University/ Mark Simons)

Dozens of Indiana animal shelters have limited resources when it comes to spaying and neutering the animals that come through their doors.  The Priority 4 Paws traveling surgery unit with veterinary medicine students brings much-needed relief to those shelters, helping them reduce the time animals spend waiting for adoption while, at the same time, providing valuable educational opportunities for students.

Priority 4 Paws (P4P) is the Purdue University College of Veterinary Medicine’s mobile shelter medicine and surgery program that has helped spay and neuter more than 14,000 shelter animals since it was started in 2012. Just last month, the unit rolled over 100,000 miles on the odometer. Reaching those kinds of numbers is a milestone for Dr. Lynetta Freeman, who spearheaded the program and just retired as professor of small animal surgery.  “I think making it to that many miles shows us that this is a program that is needed,” Dr. Freeman said.

P4P incorporates an elective course that allows fourth-year veterinary students to travel to Indiana animal shelters within driving distance and perform spay and neuter surgeries in the mobile unit. The clinic runs three days a week and two of those days are usually spent on the road, while one day is spent at Purdue. The students spend the remainder of their time doing assigned readings and online education.

Dr. Freeman believes the program has played a part in a movement to help address the issue of overcrowding and high euthanasia rates. She says shelter populations have decreased, and “save rates” – which is the percentage of animals adopted, reclaimed, or transferred – are around 90 percent.  “When the program was first started, animals would stay for a really long time in shelters,” Dr. Freeman said. “That led to behavior problems and other issues that made them harder to adopt. Today, we go to shelters and sometimes we are doing surgeries on animals that are going home the very next day.”

Veterinary student pictured with Jake the dog following neuter surgery

Veterinary medicine student Leslie Lundewall, of the DVM Class of 2019, helps Jake revive after his neuter surgery performed in the Priority 4 Paws mobile surgery unit. (Purdue University/ Mark Simons)

Dr. Freeman says being part of a solution has been eye-opening for students, too.  “I think we are part of a big picture,” Dr. Freeman commented. “The big picture is trying to reduce the time animals spend in shelters and the numbers of animals presented to shelters. Having students play a role in that makes it all the more meaningful.”

During the three-week, elective rotation, students perform an average of 35 surgeries. That number is significant, Dr. Freeman says, because it helps Purdue veterinary students stand out among their peers after graduation. “Being able to do that many surgeries is rare,” Dr. Freeman explained. “Students who complete this rotation feel much more comfortable after they’re done. If they walk into a clinic on their first day on the job and someone says ‘Here, go spay this cat,’ they feel confident and prepared to do it right away.”

For Dr. Freeman, P4P also has cultivated a love for shelter medicine. When the program was started, she said a goal of hers was for students to gain surgical experience and to create a mindset of service. Looking back, Dr. Freeman says she thinks that has been accomplished.  “It’s hard to measure, but I think our students walk away with a more philanthropic outlook,” Dr. Freeman said. “Being able to give back, and seeing the results, has been good for all of us.”

Click here to view a YouTube video about the program.

Writer(s): Abbey Nickel | pvmnews@purdue.edu

Recent Stories

Contraceptive vaccine reduces fertility in animals to address wildlife overpopulation

A Purdue University contraceptive vaccine seeks to address animal overpopulation by markedly reducing fertility in feral horses, deer, swine and other animals. Dr. Harm HogenEsch, distinguished professor of immunopathology in Purdue University’s College of Veterinary Medicine, and Dr. Raluca Ostafe, director of Purdue University’s Molecular Evolution Protein Engineering and Production Facility, both members of the Purdue Institute for Inflammation, Immunology and Infectious Disease, have designed the vaccine based on the IZUMO1 mammalian sperm protein. It induces a robust and long-lasting immune response and infertility in female mammals.

“Paws Up” – brought to you by the PVM Wellness Committee

This week Dr. Kristy Faulkner, a specialty intern in neurology, is being appreciated for supporting students’ morale and being a “baker extraordinaire,” taking extra steps in sharing her beautifully decorated cupcakes with the Small Animal Internal Medicine team.

Coppoc One Health Lecture Brings Co-leader of Innovative Dog Aging Project to PVM

“One Health at Home: Dogs as Sentinels of Environmental Exposure” is the title of the 2026 Coppoc One Health Lecture presented by Dr. Audrey Ruple, co-principal investigator for the largest animal-health research initiative to date – the Dog Aging Project.  Dr. Ruple, the Dorothy A. and Richard G. Metcalf Professor of Veterinary Medical Informatics at the Virginia-Maryland College of Veterinary Medicine at Virginia Tech, gave her talk February 26 in Lynn 1136. The lecture was free and open to the public.

Three More Years: How Specialized Care Helped Extend One Dog’s Life

When Ella, a pittie beagle mix, was diagnosed with bladder cancer at age 11, Jennifer Turner knew she wanted to make every decision count. What she did not yet know was that a cross country drive to Purdue University would give her three more years with the dog she described as her constant companion.

“Paws Up” – brought to you by the PVM Wellness Committee

This week we feel grateful for Anita Wolf, RVT, who is a veterinary technician in Intermediate Care in the Brunner Small Animal Hospital facility.

In Memory – Dr. Janet Weiss (PU DVM ’91)

The Purdue Veterinary community is saddened by the recent passing of Dr. Janet Weiss, an alumna who served as a dedicated veterinarian in Northwest Indiana. A resident of La Porte, Indiana, Dr. Weiss passed away February 20, 2025. She was 61.

Upcoming PVM Veterinary Nursing Symposium Features Hands-On Learning

Veterinary professionals in the field of veterinary nursing have a special opportunity to expand their expertise and earn continuing education (CE) at Purdue Veterinary Medicine’s Annual Veterinary Nursing Symposium. The one day continuing education program will be held at Lynn Hall on the Purdue campus March 23, 2025.

Zebra Foal Gets Lifesaving Help at Purdue University Equine Hospital

It’s not surprising to see a foal receiving emergency care at the Purdue University Equine Hospital during foaling season. The hospital’s team of expert clinicians and veterinary nurses are used to coming to the rescue when foals need special help to survive. But it was a surprise to see a foal named Marty arrive at the hospital’s Intensive Care Unit in February, because Marty is a zebra, and the hospital is in Indiana.