What is actually removed during spaying?
Spaying is an “ovariohysterectomy,” which means that both the ovaries and the uterus are removed. The cervix is tied off, leaving the vagina to end in a blind sac. Since it is the ovaries that are responsible for the heat cycles, possible mammary tumor development, and behavior problems, it is crucial that the ovaries be removed intact; some veterinarians will leave the uterus behind, though, it is generally regarded as best to remove the entire tract, uterus included.
