Like what penguinsix said, schooling is a big issue. If OP is only staying for a year or two, then ok, he can go back home for the schooling of his kid. But if he is staying longer, then schooling is going to be a big issue for the OP to consider. He could try the local kindergardens (K1-3), but the big issue is the primary school. Does the OP want to go the ESF/International school or the local school route? Most expats would go the ESF/international school route, but spaces are tight and debenture for a place on international school can be in excess of HK$ 1 million. He could go local school routine, but that raises the question of how well his kid will adjust when he goes back to whenever his parents came from.
As for housing, since he want to keep pets, that will restrict the OP's choice.