Gold, this is not just cats . I have a dog almost a year old,and he loves books, boxes, tags on underside of throw rugs,eating CAUTION labels on extension or any other kind of cord. See it's not just cats, I think it's nosey anmals in general.Let's hope they outgrow it before they get electrocuted. It hasn't killed his appetite either and the vet said he's healthy but hide the glue.I think he likes the glue on these things he eats. Maybe both yours and mine will outgrow this stage. Good luck.