“Red on yellow kills a fellow; red on black, friend of Jack!” That’s one of several old folk rhymes used to help distinguish between the poisonous coral snake and several non-venemous mimic species of kingsnake and millk snake (though this only works in North America, as coral snakes in other parts of the world may not follow this rule of thumb precisely!) We’ve always found mimicry fascinating in the animal kingdom. How and why does mimicry arise? How do mimics choose their models? What’s the difference between Batesian mimicry and Mullerian mimicry? Read on if interested in exploring the issue in more detail.