I recently adopted a five year old cat. The previous owner said he has been neutered, yet he still has balls and big nipples. He masterbates 5-10x a day and his crayon comes out. He also tries to have sex with other cats And gets in fights often. My new vet said his balls are empty confirming he has been neutered yet has never heard of the aforementioned behavior in neutered males. He said in rare cases, a testicle could reside high up in the abdomen so maybe the vet who neutered him missed a testicle or he could have female parts as well that are still active!? He suggested X-rays and an ultrasound and quoted me "approx $1500" before any type of surgery! When I suggested just going in as if he were neutering he said, "why put him under the knife unnecesarily?" Since neutering is the most commen surgical procedure for male cats and I can't afford the latter, I feel he's taking me for a ride with his recommendation. He told me of a blood test he could order but it's $400! Im so annoyed by my cat's aggessive sexual behavior and afraid he could he get hurt, or hurt or kill another cat fighting as much as he does! He even attacks big dogs! Has anyone ever experienced something like this? Any advice would be appreciated.