Search Search Search Topic Spay/Neuter (-) Surgery Animal Health Animal Care Active FiltersSurgery Group 9 Clear All Video: Spay/Neuter Tattoo Application This video shows a standardized way to apply tattoos to indicate an animal has been spayed or neutered. New Research Shows Ovarian Pedicle Tie Safe in Feline Spay Surgery Learn more about spaying female cats with the ovarian pedicle tie (OPT) technique, which can be performed 30% faster than traditional sutures with comparable hemorrhaging risks.