If you’ve ever owned a cat, then you know how much they like catnip. Cats go crazy for this stuff and would eat it anytime, any day. It’s mainly because catnip contains an active ingredient called nepetalactone, which causes a high in cats. But do big cats like catnip too? It’s a question that the guys in charge of the Big Cat Rescue project get asked a lot. So they’ve decided to find out once and for all if big cats like tigers, lions and leopards like catnip as much as their smaller counterparts.