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TIL that Cambridge University conducted a test in which pigs were shown a mirror and encouraged to retrieve objects reflected in the mirror. The test results suggest that pigs can differentiate between reality and the reflected image, thus demonstrating a high level of cognitive awareness.

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oaPY TIL that as long as they are not expressly prohibited, anyone may camp anywhere on all 17.8 million square acres of public land in the State of Wyoming nearly indefinitely [PDF].
ADJEg TIL: That the majority of bees dance to communicate with each other the location of sweet nectar. Yet there is a significant minority of bees that ignore the dance instructions and choose to explore their own paths. These contrarian bees are better at finding food than those that follow the crowd!
VMLP8 TIL that the Olympic flag's colors are always red, black, blue, green, and yellow rings on a field of white. This is because at least one of those colors appears on the flag of every nation on the planet.
W7wrL TIL that there is a page to check if an image is a repost (to prevent you from reposting)
lQDB TIL: The Memorial to Heroic Self Sacrifice is a public monument in Postman’s Park in the City of London, commemorating ordinary people who died saving the lives of others and who might otherwise have been forgotten