So I have a 4 month old black lab male unaltered (they won't neuter here till 6 months) I will DEFINATLY be fixing him without a question, but for the time being I have a few questions. He is a very dominant male he is a HUGE handful for me. He is excellent for my husband but not for me he bites me harder, growls at me, barks and has started humping me I"ve never had this problem with any of my male animals before is humping a dominace issue??? Anyways I need help. He is clever he can sit, stay, shake a paw and lie down I taught him all these tricks. I make him sit before coming out of his crate, going outside, coming inside and being fed. When he nips and bites really hard he sometimes draw blood so I talked to the vet and he said to hold him on the ground gently until he stops wiggling thats what his mother would do and we try this. So what else can I do there are no puppy classes in my area I';ve searched... Clases don't begin till 6 months, I will however keep looking... Any insight on my stubborn pooch LOL
He is also still not housetrained is this normal??

Here are a couple cute pics of my lil guy
Kong stealing the babies swing:


Chillin'


and one of Gomer, Mercedes & I watching a movie: