If a girl and a dog did it, what would the baby be?

Hahaha idk im so bord right now i just thought it would be crazy, oh!!! and also, how did the man who got prego "get" prego?? i mean, since he was a girl who gotta sex change, and he had a WIFE and a boy n a girl is needed for a child, so!! how did a baby come out of this???