I am new to the board, but not new to Bostons. My JJ is now 6 years old (male), and recently, we have noticed him "biting" or acting like he is trying to catch flying mosquitoes or flies which aren't there, over his head. I am wondering if something is wrong with his eyes? It only happens when he looks up - it's as if there was a swarm of bugs over his head and he tries to jump up and catch them by biting at the air. Any suggestions? I do hope this is not a precursor to seizures!! Help!! We will take him to the vet soon if it continues.