As of July 2017, the boards of all the major national veterinary organizations have endorsed this practice:

  • The American Veterinary Medical Association

  • Association American Animal Hospital Association

  • American Association of Feline Practitioners

  • Association of Shelter Veterinarians

  • Catalyst Council

Other cat-related organizations have also endorsed the Feline Fix by Five initiative.  They include:

  • WINN Feline Foundation

  • United Spay Alliance

  • WebMD

  • The Cat Fanciers’ Association

  • The International Cat Association.