It doesn’t matter if you’re black and white. Unless you’re a panda, in which case your look may be a matter of survival. Scientists puzzled by the bears’ distinctive color blocking are now theorizing that since pandas don’t hibernate, their monochromatic fur provides camouflage in both snowy landscapes and dark forests. Their distinctive eye circles and black ears may also identify them to other bears, communicating aggression to competitors or compatibility to mates. The survival strategy appears to be working: Pandas were taken off the endangered species list last year.