Their tail, described best as an otter tail, is thick at the base and tapers to a narrower point.
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When they reach full size, they attach to a leaf by their tail, and a pupa is formed.
当它们长到最大尺寸时，它们用尾部附着在树叶上，蛹就形成了。
They sometimes breathe by "standing" on their tail with their heads above water.
有时会“站立”在它们的尾部上，使头部露出水面来进行呼吸。
Watching with amusement as they actually catch their tail.
看到它们真的咬住自己尾巴的时候乐不可支……
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