[WalnutHill]

Originally Posted by PennysMum

It could be his ear, or even a dental problem-- sometimes dogs will paw at their face if they have pain in a tooth or their gums.

I'd have to agree. Check to see if the ear looks red or inflammed and check the teeth and gums for inflammation or discoloration. There also could be a scratch or splinter or some other injury to that side of the face - check under the hair for any signs of inflammation. And, make an appointment to see the vet. : )