
Hehehehehe
He is young, she is female, he is horny!!!!!!!!!!!!!!!!!!!!!!! course he is going to mount her, especially if she will let him.
I have a 3 year old dog, he was neutered at 18 months. He can, and has, mounted, and TIED a bitch in heat, SINCE being neutered!!!!!! As they say, where there is a willy, there is a way!
I doubt very much that he is trying to boss her about, i would expect that in time, SHE wil become the boss, it is usually the bitch that wears the trousers!
Id get her spayed about 3 months after her next season.
Good luck, Em