My 4 month old kitten had thread comming out of her rear! I've heard horrible stories about thread doing damage to their intestines. alot has come out and she keeps licking it, but i don't want her to keep pulling it out. She pooped fine this morning and is eating and not acting like it's hurting. Should I wait to see if it will pass? I would have to take her to an emergency clinic and right now I really can't afford that. What would a vet do about it?