TNR is an acronym, which means Trap, Neuter and Return.
TNR is an approach to assisting and managing feral cats. It started in Europe over 30 years ago and has been becoming more of an accepted practice in the United States over the past few decades.
The approach consists of trapping feral cats, bringing them to a clinic to be neutered and vaccinated and then returning them to their original outdoor home to live out their lives. The goal is to reduce the growing population of feral cats and reduce the stresses associated with mating and pregnancy.
Modern Cat website has been featuring articles all week about TNR including an interview with Becky Robinson, President and Co-founder of Alley Cat Allies, an advocacy organization dedicated to the protection and humane treatment of cats.