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Lmao, really?? Frogs do until they become adults. (tadpoles) and snakes are nothing but tails! So out of the thousands of species on this planet, you nailed apes & spiders.
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Snakes are not one long tail, and the majority of a frogs life is as an adult, that would be like saying a notable feature of adult humans is the umbilical chord. Oh, and all other insects save for outliers (scorpions or whatever) And might I add, humans do have the remnants of a tail, the [i]tail bone[/i]