Got a costume for Halloween? You’re not the only one. Some animals and insects wear their costumes all year round, masquerading as plants, leaves, and even other creatures to better evade predators—and to hunt their own prey. Some, like the leaf-litter toad, bark-mimicking grasshopper, and mossy leaf-tailed gecko, use cryptic coloration, coloring that conceals their shape, to blend into the background. The mimic octopus, cuttlefish, and chameleon use pigment sacs called chromatophores to rapidly change their skins according to their environment. Whatever you’re dressed as for Halloween, one thing is for sure: These creatures have you beat.