TNR is a method for attempting to humanely and effectively manage free-roaming domestic cats. The process involves live-trapping the cats, having them spayed or neutered , ear-tipped for identification and, if possible, vaccinated, then releasing them back into their territory. Ideally, friendly adults and kittens young enough to be easily socialized are retained and placed for adoption. Feral cats cannot be socialized, shun most human interaction and do not fare well in confinement, so they should not be retained.