He was, it was just done before his balls had dropped, prior to 4 months, so something got left behind which is still pumping out hormones. He was okay until we added a male to the household and ferals outside.
What medication was it? My neutered male, almost 16 has been on megesterol acetate for about 4 years. He was neutered by a rescue pre-pubescent and it has been figured they missed tissue as he grew up to look like a tom. big head/neck etc. He started marking after we got a second male. his...