An animal which copies the colouration of another animal?

An animal which copies the colouration of another animal is called a mimic. This is a form of mimicry, where one species evolves to resemble another species, often for protection.

Here are some examples of mimicry:

* Batesian mimicry: A harmless species mimics a dangerous species. For example, the Viceroy butterfly mimics the Monarch butterfly, which is poisonous to predators.

* Müllerian mimicry: Two or more dangerous species resemble each other. This amplifies the signal to predators and reduces the chance of each species being attacked. For example, the Scarlet Kingsnake and the Eastern Coral Snake are both poisonous and have similar color patterns.

* Aggressive mimicry: A predator mimics a harmless species to lure prey. For example, some spiders mimic flowers to attract insects.

There are many different types of mimicry, but the basic principle is the same: one species gains an advantage by resembling another species.