Animals are capable of behaving in particular ways to a stimulus. If a particular aspect of the external environment possesses a threat, the organism in question will exhibit avoidance Behaviour to avoid any potential escalation in the situation at hand. This typically involves a retreat, which will either physically remove the organism from the situation (running away) or exhibiting characteristics to illustrate the animals intentions. Behaviour is unique to each animal, for instance, batesian Mimicry by butterflies (colourful, dangerous like wings) is used to initiate such avoidance Behaviour in organisms that would otherwise be a danger to the butterfly. Also see habituation.