The results of new study on the effectiveness of trap-neuter-return (TNR) support what previous studies have already shown...that TNR does effectively reduce feral cat populations. A University of Florida study lead by Dr. Julie Levy found that spaying or neutering community cats in an area of high animal-control impoundments led to a dramatic decline in the number of cats who were admitted to and euthanized by the local shelter.
“We investigated whether we ever could neuter enough cats to slow their intake into animal control,” said Dr. Julie Levy, the Maddie’s professor of shelter medicine at the Univ. of Florida College of Veterinary Medicine.
The two-year study was conducted in an area of Alachua County adjacent to the University of Florida campus and included a business district, several residential neighborhoods, a mobile home park, two homeless shelters, industrial parks, and a veterinary clinic. During the study, 2,366 community cats were TNR'd, which is estimated to be about 54 percent of the feral cat population in the targeted area. Most of the cats were returned to the site, with some being adopted.