Alright, first; have his ears gone up and down at all? He's probably purebred, it should help that your giving him bones and dairy, if they don't stand up before he's a year old I would tape them if you still want them up. I really don't know what else to tell you, but I hope this helped. Maybe an experienced member will see this and help you. I wouldn't worry though, some's ears stand when they're 8 or 9 months old.