My 4 year old cat has started licking plastic bags. He drags them under and behind furniture like a nest, and just lies there licking them!! No bags are safe from this behavior..not to mention the sound grates on my nerves. Otherwise he is your normal 16 pound black stray (we got when he was a kitten). He has plenty of food and water. He has no health problems we know of...except this licking!! Has anyone ever heard of this behavior? Do we know how to stop it? I love him dearly...but he is driving me crazy!!!