Peacock larvae

 In contrast with the brightly-coloured adult peacock butterfly, its caterpillar is actually a velvety jet-black peppered with small white spots. It has short spines, which help to protect it from predators. Peacock caterpillars also ward off predators by coming together and jerking their bodies in unison. This gives the illusion they are a much bigger animal. They will also curl up in a ball and drop to the floor or regurgitate a green substance to keep predators away.