Onions are toxic to dogs. They can cause hemolytic anemia and result in death. A 45-lb. dog would only have to eat one medium to large onion to experience dangerous toxicity levels.

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Leonardo da Vinci worked on the Mona Lisa for 15 years. By the time he died in 1519, he still didn’t consider it finished.

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Capgras syndrome (CS) , this is a delusional misidentification syndrome where the victim is convinced that their loved ones (family, pets, close friends) are replaced by imposters. Sometimes, the delusion is about more distant people, pets, or even objects. No amount of reasoning can change their minds.

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The human nose can recognise over 1,000,000,000,000 different smells.

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The founder of KFC was a loser until he was 65, he had no money, he borrowed $87 and started making fried chicken wings. He failed 1,009 times before he was able to sell his first franchise. By age 88, he became a billionaire.

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To stay cool in hot temperatures, kangaroos lick their arms until the fur and skin are sopping wet. The wind hitting their arms causes the saliva to evaporate and cool them off.

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The world's largest mountain range is under the sea.

Mount Everest or Kilimanjaro are likely the massive mountains you know by name. But if you're looking for the longest mountain range on Earth, you'd need to check out the mid-ocean ridge, which the National Ocean Service reports stretches for 40,389 miles, with 90 percent of it under the sea.

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The Sodium Lauryl Sulfate in toothpaste suppresses sweetness receptors, which is why juice tastes so bad after brushing your teeth.

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Mexico is the world's fattest country. About 73% of the Mexican population is overweight.

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France shares its largest border with Brazil. The border is located between the Brazilian state of Amapá and the French region of Guyane. It is 730 kilometres (450 mi) in length.

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Before rubber erasers became a thing, people in the 1770's used balled up, moistened bread to erase pencil marks.

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Kim Un Young - the smartest person in the world entered university at the age of 4. At the age of 7, he received an invitation to work at NASA. By the age of two, he already spoke 5 languages.

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The modern doorknob was invented in 1878 by 16 year old African American inventor called Osbourn Dorsey

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The World's Most (And Least) Powerful Passports.

No. of countries passport holders can visit visa-free:
Japan - 193
Singapore - 192
South Korea - 192
Spain - 190
Germany - 190
Finland - 189
Italy - 189
Luxembourg - 189

Least Powerful Passports:
Pakistan - 32
Syria - 30
Iraq - 30
Afghanistan - 27

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