Animal+responses+which+are+not+movements+or+secretions


 * = Colour change =

Many animals can change the colour of their skin. They do it in order to camouflage themselves with their surroundings, to scare off predators or to communicate with other members of their species (during mating, for example). || || One interesting example among terrestrial animals is that of __fireflies.__ Theses beetles produce a greenish light at the end of their abdomen in order to attract mates. || || Some aquatic organisms, like electric eels, or a type of ray called an electric or torpedo ray, can generate electricity inside their bodies and discharge it in the water to stun their prey or predators. || ||
 * Bioluminescence is the production of light by a living organism, and is more common among marine animals.
 * Electricity production