Hi Everyone - I got 2 radically different opinions from my vet and the breeder. One said at 6 months, the other said wait till about 14 months. He is 4 months now, and already humping pillows! His "lipstick" made it's first appearance yesterday. I want to neuter him as soon as possible, but I certainly don't want to do it too soon to stunt his growth, etc. Please let me know. Thanks!