We think we have got to the bottom of it! Lately poor Bubba has had a nose full of dry crusty brown things! Today DH managed to let him clean his nose out properly and said it was really blocked at the top of his nose. Once he had cleaned it out properly he started drinkng again! Poor thing couldn't breathe properly with his mouth closed ! Or that's what we are guessing anyway. So we have learnt something there then.....!