Tail-wagging in Animals
The levator ani muscles, in quadruped animals with tails, are responsible for moving the tail around in the act of "wagging." These muscles are not as strong as their human equivalents, as tail-wagging is less demanding than the support function that the muscles serve in humans.
Read more about this topic: Levator Ani
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“Humans are amphibians—half spirit and half animal.... As spirits they belong to the eternal world, but as animals they inhabit time.”
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