Animals carry out other types of responses to stimuli besides movements and secretions. For example:

2. Animals carry out other types of responses to stimuli besides movements and secretions. For example: Colour change Light production Electricity production Click on the buttons to find out more

3. 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). Chameleons change colour to blend in with their surroundings. Cephalopods can change colour very quickly. Octopus Chameleon Back

4. Light production Firefly Bioluminescence is the production of light by a living organism, and is more common among marine animals. 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. Back

5. Electricity production 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. Electric ray Back