Tigers are rare enough in general, with all six existing species currently on the endangered list. Keeping that in mind, imagine if your zoo managed to breed a litter of four super-rare white tigers, one of which is albino. You would have hit the breeding-program jackpot. And that's exactly what's happened for the Yalta Zoo in Yalta, Ukraine, where these quadruplet kittens were born on Sunday, May 6. Litters of these seldom-seen animals normally number two or three, so these four cuties are rare indeed, not to mention adorable as all get-out. Watch the video below to see zoo staff bottle feed these odds-defying, days-old cutie pies.