WHY do hares need big ears?

Long hare ears are not only powerful hearing organs, but also cooling radiators. To escape predators, the hare has to run a lot and often, so it needs a powerful “cooling device“.

If a hare would get rid of excess heat only by perspiration, it would consume a lot of water. And cooling by heat exchange allows it to survive in arid places and on scarce food like tree bark.

On the ears, right under the skin of these animals, powerful vessels pass (those who have fondled rabbits probably paid attention to this), the lumen of which is regulated in a wide range.

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