Which is an example of Batesian mimicry? Two toxic butterfly species undergo natural selection to look like each other A wild species of grass undergoes natural selection to look more like wheat and is able to grow undetected in wheat fields A non-toxic snake species undergoes natural selection to resemble a bad-tasting but not poisonous species. A non-toxic walking stick insect undergoes natural selection to resemble the leaf of a tree with poisonous leaves.