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At least one of the purposes tail serves is to help keep the fox warm.

In cold weather a fox will sometimes curl up and cover its nose and paw pads with its tail to keep them warm.
The tails on most small mammals like cats, dogs and foxes are useful when the animal is running, jumping and climbing things like steep slopes or small hills. It can be used to balance on narrow places, the same way tightrope walkers use a long pole to improve their balance on a high wire. It can also be used as an indicator of emotion to others animals, such as puffing up when the animal is angry-scared, waving when a dog is happy or tucking under between the legs when an animal is running away.

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13y ago

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