Bunny command,wolfs,and foals

I have had 2 rabbits drown,one suffocate in a wall,and one dissapear to who knows where.I can only lead them up.in my opinion,we should be able to tell them to stay,like dogs and cats.also, my dogs refuse to teleport to me, even though there tamed.i dont know if that is something that is planned to be added.finally, if i breed a horse,the baby is full grown at birth