Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
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15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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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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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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