The Barreleye fish has a transparent head.

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Pigeons can tell the difference between a painting by Monet and Picasso.

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The only other mammal that likes spicy foods is the tree shrew.

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The world’s smallest reptile is a chameleon discovered in Madagascar in January 2021.

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Horses can’t vomit.

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Honey hunters in Mozambique recruit birds known as honeyguides to help locate beehives. In return for the bird’s services, they receive leftover beeswax.

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A reindeer’s eyes change colors through the seasons. They are gold during the summer and blue in the winter.

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While many aquariums feature different species of sharks, Great White sharks do not survive in captivity.

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The most common wild bird in the world isn’t the sparrow or blue jay—it’s the red-billed quelea, which live in Africa and have an estimated population of 1.5 billion.

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