Cuttlefish. A true master of disguise. Related to the squid and nautilus, the cuttlefish can change its appearance at will by changing color and even skin texture. It also has one of the largest brain-to-body size ratios of any invertebrate. Ironically, despite all the brilliant color shifting, they’re colorblind! . . . . . . . #cuttlefish #animallover #animalplanet #wildfacts #animalkingdom