Trap-neuter-return (TNR) is a management technique in which homeless, free-roaming (community) cats are humanely trapped, evaluated and sterilized by a licensed veterinarian, vaccinated against rabies, and then returned to their original habitat. Once returned, these cats are far less likely to engage in annoying or destructive behavior. Crying, yowling, fighting, spraying, and roaming behaviors are reduced or eliminated. TNR cats become better neighbors.
Good Samaritans in neighborhoods all across the country provide food, water and shelter for community cats, and TNR provides a non-lethal, humane way to effectively manage these community cat populations. Stopping the breeding and removing some cats for adoption is more effective than the traditional trap-and-kill method in lowering the numbers of cats in a community long-term.
How can you tell if a community cat has been fixed? Look at its ears. While under anesthesia, one ear is either notched or "tipped" to identify a cat that has already been through the TNR procedure. This prevents repeat trapping and transporting which saves time and money that can then be used for cats still in need of fixing.