Might be something like this: http://pets.stackexchange.com/questions/23/why-do-cats-lick-plastic-bags-and-is-there-any-harm-in-it http://pets.stackexchange.co

Might be something like this: http://pets.stackexchange.com/questions/23/why-do-cats-lick-plastic-bags-and-is-there-any-harm-in-it http://pets.stackexchange.com/questions/23/why-do-cats-lick-... My cat is mad for a good lick and a sniff of a plastic bag. She doesn't actually chew them but does this strange chewing motion with her mouth, a bit like when cats practice their kill bite or chatter when looking at potential prey from a window.