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CowForCow 2 points ago +2 / -0

There is only one species of penguin? Only one species of butterfly? Only one species of ant? Only one species of canine? Only one species of cat?

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LugNuts 1 point ago +1 / -0

there is only one species of Homo sapiens. Species, in animals, is defined by whether or not they can inter-breed and produce viable offspring. Within a species of butterfly, they can only do that to their own kind. "butterfly" and "penguin" are not species. Finish high school.