I don't know the answer to this but that link is very funny. It shows that it's best not to brag too much, especially if your spelling or typing skills leave something to be desired! I think my Trevor relies on his nose more too. He has an uncanny ability to "smell" an opened yogurt. Maybe it's his hearing that is so good, and he can actually hear the lid coming off! At any rate he is there in an instant, long before he sees it!