We had our male blk Lab 15 years before we had to put him to sleep - and he was the best dog I've ever seen! Honest... never, ever did he even come close to biting "anyone". He was the most gentle, loyal, loving, playful, intelligent companion anyone could ask for. We didn't get him neutered until he was 5 years old - and he did
not spray in our house - ever! He would mark his territory outside, though.