Zach was neutered around 11 months and he has never marked in the house. I brought him home when he was 12 months old and he goes where he needs to go. I've never seen him mark outside either! Sometimes he will lift his leg to pee but in the time that I've had him I've only seen him do it twice.
Boys are such mamas boys, they love to cuddle so much!! At least mine does lol HE does try to get snippy sometimes with our bigger dog but mostly he is trying to play with her when Lola won't play with him .