Banjo was neutered at 5 months, and started cocking his leg before this. Now he does it all the time, especially going for walks. I swear he squeezes a drop out just to say Hey I've been here. Hes outside trained so has never marked in the house. He just stand there to have his pee, sometimes he lifts his leg. Oh and yeah given the oppotunity he still humps, but not as often.