Sheep, goats, octopuses, and toads have rectangular pupils.
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A group of pugs is called a grumble.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
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The male seahorse carries babies and 'gives birth' to them instead of the female.
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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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