A number of animals do not camouflage themselves, but copy the bright colours of a dangerous one, a strategy called Batesian mimicry.
This harmless milk snake for example looks much like the very dangerous coral snake.
There are a number of little rhymes to differentiate based on the colour bands, like this one:
Red follows black – friend of Jack
Red follows yellow – dangerous fellow.
Did I mention it only holds true for North American snakes? (Do check place of birth before getting too friendly.)
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