One day, you might see a cat in your neighborhood who if you look closely, has a small section of its left ear "tipped" or removed. This means that a TNR (trap neuter return) volunteer in your neighborhood has already trapped, fixed and vaccinated this cat. The cat will also almost assuredly be microchipped and tattooed on its belly to indicate to other TNR volunteers and cat lovers in-the-know that this cat does not need to be trapped. However, if this cat is sick or injured, you can trap it and take it to any vet or shelter and have it "wanded" to check the registration on the microchip, and call the shelter it's registered with for medical and hopefully financial assistance in treating the cat. The eartipping is completely painless for the cat as it is done while the cat is under anesthesia when it was being fixed.