When we first got Joey he was such a good boy, never bit or clawed anything. Well lately he's been biting my dad and my grandpa a lot. There's even been a couple of times when he would bite me outside of play. Like usually he does give me little playful bites which I don't mind..but I let him know when he's being too rough by saying "OW!" and then he stops whatever he was doing..and we go back to playing. But lately Joey's been acting really agitated a lot and i'm really concerned. Do you know why he's probably biting everyone or at least how to stop it? We're mainly worried because we'll have little kids over here every once in awhile and we don't want them getting hurt.