Allie recently had dental surgery to remove all but five of her teeth. She had a rare genetic gum disease that might have killed her if I didn't take her to the vet on a whim when I did. Ever since she's come home, she loves to lick plastic: ziploc bags, grocery bags, bubble wrap, everything and anything that's sheetlike plastic! I know this has happened once before, but I don't remember the reason the vet gave me for this behavior, or what he told me to do to stop it. Any takers?