Trap-Neuter-Return (TNR) Programs

Maricopa County has an estimated 250,000 free-roaming outdoor or stray cats. Through Trap-Neuter-Return (TNR) and other innovative community partnerships and programs, we are committed to giving free-roaming outdoor cats a better quality of life by moving away from euthanasia as the only solution to our current cat overpopulation issue.

AHS has teamed with a number of different animal organizations to promote Trap-Neuter-Return programs. TNR programs humanely trap outdoor free-roaming cats, spay or neuter them and then return them to their colony locations.

TNR programs are the most humane and effective way to stabilize outdoor cat populations. They help reduce cat overpopulation through natural attrition as opposed to euthanasia and allow for undomesticated felines to live out their lives in their colonies. TNR also reduces displeasing behaviors associated with mating, such as yowling and spraying.

AHS has partnered with the Animal Defense League of Arizona and other community partners to develop an expanded TNR program to help reduce outdoor cat populations in the Valley. For more information on this program as well as additional free-roaming cat resources, visit

Other Trap-Neuter-Return (TNR) Resources