- A lobsters blood is colorless but when exposed to oxygen it turns blue.
- The popsicle was invented in 1905 by an 11-year-old boy.
- The only continent without reptiles or snakes is Antarctica.
- Cows give more milk when they listen to music.
- The Hindu-Arabic numeral system began developing as early as the 1st century with a full system being established around the 9th century, forming the basis of the numerical digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 that we use today.
- Sloths can hold their breath longer than dolphins can.
- A ten-gallon hat holds less than a gallon of liquid.
- The largest island in the Mediterranean sea is Sicily.
- Cats can jump up to 7 times their tail length.
- It is against the law to put pretzels in bags in Philadelphia.
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