Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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There's a rare breed of pig that looks like a sheep.
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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
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Cats sleep for 70% of their lives.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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