Spider hides in flower: camouflage for defence and offence. It hides from
birds, and waits for small insects
Two butterfly
species showing the same warning pattern: the
monarch (left) and the
viceroy (right). The Monarch butterfly tastes foul and is toxic while the Viceroy doesn't taste foul and is non-toxic. This is an example of Batesian mimicry. A bird tasting a Monarch will then avoid Viceroys.
In biology, mimicry is when a species evolves features similar to another. Either one or both are protected when a third species cannot tell them apart. Often, these features are visual; one species looks like another; but similarities of sound, smell and behaviour may also make the fraud seem more real.