The world's smallest mammal is the bumblebee bat of Thailand, weighing less than a penny.
60
Dogs can make about 100 different facial expressions.
18
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
The fingerprints of koala bears are virtually indistinguishable from those of humans, so much so that they could be confused at a crime scene.
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