My three year old hermanns tortoise minho recently fell and cracked his shell. he fell headfirst and it looks like he chipped off a large chunk by the head area. there was a small amount of blood but it is the next day and he's awake, running around, eating, and is his usual high energy self. in one of the pictures he is trying to bite me, which is very in character for him. i have cleaned the wound and then taped it up to prevent any dirt from getting into the wound. Any advice?