Fun fact (since that's the only fun we're gonna get) according to our zoo keeper/vet friends we happen to be hanging out at the bar with, all big cats except lions tend to get neutered like house cats (take the balls leave the sack). Lions tend to get a vasectomy because other options cause loss of aggression, muscle mass, weight gain, & loss of mane that makes them that makes the venerable to... wait, you might be right, gelded. Just gelded.