Hi All Looking for some advice. We have a 2 year old welsh sheep dog. Up until today he has enjoyed a fuss but has snapped at anyone who tries to stroke him since we got home today. The odd thing is he wants to play as usual and does not seem ill or anything, but if we sit down he will come over wagging his tail and put his head in my lap or try and lick my face or nudge my hand as though he wants some fuss or a stroke but the moment I try and stroke him no matter how or where he tries to bite me. Any ideas? Thoughts?