An ear tip is the universal sign of a community cat (a feral cat that has been trapped, neutered, and returned to the community) : r/Awwducational
File:Cat with clipped ear (cropped).jpg - Wikimedia Commons
Maui Humane Society - On Maui, a cat with a "tipped" or "notched" ear means it has been spayed or neutered as part of a program to humanely control our island's cat
Neighborhood Cats | How to TNR | Eartipping
Feral Cat Information
Community Cats | Humane Society of Miami
For those who asked about a... - Friends of Feral Felines | Facebook
Picasa Web Albums - Diana Wind - GardenFoodFun | Feral cats, Cats, Feral cat shelter
Neighborhood Cats | How to TNR | Eartipping
Ear tipping cats in theory and in practice | PetMD
Cat gets ears clipped after going to the vet to get neutered
Mooney's Grove's Feral Cats in Danger of Being Eliminated - Valley Voice
Ferral cat. See the clipped ear. She has her shots and been spayed and set free. Thats the meaning of the clip. | Feral cat shelter, Cute animals, Cat shelter
Ear-tipped feral cats play an important role - South Coast Sun
Why do some cats have an ear tip missing?
What Should You Do With a Stray Cat? | Eliot Neighborhood
Ear Notch – Cats Exclusive, Inc.
Ear Notch – Cats Exclusive, Inc.
Ear Tipping — Feral Cat Spay/Neuter Project
Feral Cat Ear Tipping | SOS of Ohio, Low Cost Spay and Neuter Services, Greater Columbus Area
Frequently Asked Questions — Feral Cat Coalition of Oregon
Ear Tipping — Feral Cat Spay/Neuter Project
understanding ear-tipping in feral cats — well minded pets
Why do some cats have an ear tip missing?
Feral Cat Ear Notching | Bad Cat Chris
Why clip cats' ears?
Neighborhood Cats | How to TNR | Eartipping
