 Poison ivy. You know what poison ivy looks like? It's bright green leaves, three of them. Like you put out your three fingers in front of you and hold the rest of your fingers down. That's what poison ivy looks like. And many people are highly allergic to poison ivy. So the question, the D's quiz. There's one animal you can have around that loves to eat poison ivy and has no negative effects. This animal will eat all of your poison ivy.