So this is my first time owning a gsd puppy. We got him at 14 weeks old. up until 5 months his ears was always up sticking up no matter what he was doing. Soon as he turned 5 months his left ear has been down. I did notice that all 4 of his fangs fell out recently. His last fang fell out about 3 days ago. Will his ears go back up? Alot of people say at 5 months his ears should be up. Other say 7 months. I need some advice! I'm a over protective parent please help me!