I just recieved a call from my friend who is a Vet. Someone brought in a B&W and my friend doesn't know what is wrong (he ia a small animal vet.) The B&W keeps swallows a lot but there isn't anything in its mouth or throat. It also "licks its lips" alot. It looks to be in good health other than the swallowing problem. There isn't any nasal discharge or an open mouth problem. Any ideas?