Everyone knows internet cat videos are huge, so what better to promote International Tiger Day than a video featuring the tiger's feline cousins? That's certainly what Greenpeace thought, enlisting London agency Mr President to put together this film clearly targeted at LOLCat fans. The latter might recognize Lil BUB, Princess Monster Truck, Nala Cat, Hamilton the Hipster Cat, Captain Pancake (who's hilarious in a tiger costume) and more. There's a a serious message though -- there are only 3,000 tigers left in the wild today and these big cats are threatened by global extinction.