What Happens When Cats Have Catnip?

Oh, we know what happens to cats when they get near catnip, but it's always fun to watch as they indulge -especially with psychedelic music and a few visual effects thrown in. It's totally harmless, because cats don't have to make it to work on time or impress their in-laws or or keep an eye on those burning candles. BBC Earth presents a montage of cats enjoying some nip from the series Pets: Wild At Heart. (via Digg)