we don't have any experience with laser neutering, if you do it please tell us how it goes! with axle, he humped EVERYTHING and EVERYONE, and went so far as to bite my hubby's ...um... "parts" out of jealousy / dominance. then, he ripped hubby's pants when he tried to yank his leg off the couch to hump it. and then there was the time hubby was walking and axle yanked his leg out from under him, made him fall, and started humping him... after that, we all agreed it was time to get him "fixed" and boy, did it ever FIX him! he doesn't hump anymore, and is very mellow, especially compared to the heathen he was when he was younger. we got him done at about 8 months because of the size and more so because of him humping / aggression.