Decrease in spay-neuter surgeries during pandemic may undermine pet welfare

The COVID-19 pandemic started with a surge in pet adoptions, but it has had another dramatic – and unfortunate – effect on the country’s pets: a huge chunk of missing neutering surgeries. New research finds that there are almost 3 million missing neuter/spay surgeries in the U.S. due to the pandemic, which, combined with veterinarian and staff shortages, is contributing to widespread overcrowding at pet shelters.

The findings come from a study of over 200 clinics from 2019 to 2021 by researchers at the University of Florida. Progress made over decades to control overpopulation of dogs and cats through high-volume spay-neuter surgeries is at risk thanks to the ongoing COVID-19 pandemic, a team of UF researchers conclude in a new study.

The impact — felt both at community shelters and veterinary clinics — includes sharp declines in spay-neuter surgeries after the initial pandemic-triggered lockdowns, followed by staffing shortages in clinics and shelters, overcrowding and lagging pet adoption rates. All of these problems are compounded by a nationwide shortage of veterinarians, which has been felt even more acutely in shelters and spay-neuter clinics, the researchers say in a study published Sept. 13, 2022 in Frontiers in Veterinary Science. Click here to read the full-length paper.

Simone Guerios, D.V.M., Ph.D., a clinical assistant professor of shelter medicine at UF and the study’s lead author performing surgery.
Simone Guerios, D.V.M., Ph.D., clinical assistant professor of shelter medicine at UF and the study’s lead author.

The study focused on the effect of the COVID-19 pandemic on the volume of surgical procedures performed by spay-neuter clinics, said Simone Guerios, D.V.M., Ph.D., a clinical assistant professor of shelter medicine at UF and the study’s lead author.

The team drew its research from 212 clinics nationally, all of which make use of the cloud-based clinic management software program Clinic HQ, which is specifically designed for facilities that focus on spay-neuter and preventive health care services.

“The high level of spay-neuter achieved over the past five decades is the single most important driver of reduced pet overpopulation and euthanasia in animal shelters,” Guerios said. “The rise in subsidized spay-neuter access helped drive the euthanasia of shelter pets in the United States from an estimated 13.5 million in 1973 to 1.5 million in 2019.”

Using 2019 as a baseline, the UF team aimed to determine the impact of the pandemic on the volume of spay-neuter procedures performed in 2020-2021 at the 212 clinics, which collectively performed more than 1 million surgeries per year and were on track to increase surgeries by 5% over the previous year. But in the 24 months from January 2020 through December 2021, 190,818 fewer surgeries were performed at the clinics studied than would be expected had 2019 levels been maintained, the researchers found.

Using 2019 as a baseline, this line graph illustrates the impact of the pandemic on the volume of spay-neuter procedures performed in 2020-2021 at the 212 clinics showing from January 2020 through December 2021, 190,818 fewer surgeries were performed at the clinics studied than would be expected had 2019 levels been maintained.
The number of cats and dogs spayed or neutered per month at 212 spay-neuter clinics in the US during baseline year 2019 compared to the COVID-19 pandemic years 2020 and 2021.

“If a similar pattern was experienced by other spay-neuter programs in the United States, it would suggest there is a deficit of more than 2.7 million spay-neuter surgeries that animal welfare organizations have yet to address,” said co-author Julie Levy, D.V.M., Ph.D., the Fran Marino Endowed Distinguished Professor of Shelter Medicine Education. “And that doesn’t even account for the compounding effect of those un-neutered dogs and cats having additional offspring at risk for further reproduction.”

All the impacts of the pandemic combined have the potential to undermine progress made in controlling pet populations and euthanasia in shelters, Levy added.

“Currently, shelters are in crisis mode, with overcrowding and lagging adoptions,” Guerios said. “Pet overpopulation seems to be increasing, leading to increased shelter euthanasia for the first time in many years.”

The UF College of Veterinary Medicine is responding to societal needs by increasing class size and remodeling its surgical training facility to enhance surgical skills development. The college also offers four courses and clerkships specifically designed to provide students with real-world spay-neuter experience, Levy said.

As part of these hands-on learning opportunities, UF veterinary students spay and neuter thousands of cats and dogs in their local communities, she added.

“Through our recent expansion of class size to meet the increasing demand for veterinary graduates, along with unique certificate programs and shelter medicine internships, our college is taking proactive action to address these disturbing trends in animal healthcare and well-being,” said Christopher Adin, D.V.M., chair of UF’s department of small animal clinical sciences, which oversees the college’s shelter medicine program.