He will try to mate with her, stand up on her back & hump her. If she is not fixed she will get pregnant.
Nothing will happen. She won't get pregnant, since he lacks the tools to impregnate her.
he should get fixed
no. if a dog is fixed they can never become unfixed.
No, they cannot.
NO
no, because his sperm sack has been removed but he can try but no because no sperm is going in to meet the eggs
NO
Get her fixed!
If the female is trying to get pregnant with a male dog then it will go on the males back but if the female dog is going on the males back while pregnant then it may means that they wanted to have another baby.
By mating with a male dog.
Sometimes.