Whitetip reef sharks sleep in cuddly piles, just like kittens or puppies. Although sharks don’t enter a fully unconscious state of sleep like mammals do, they like to snuggle while switching between states of restfulness and wakefulness.

The inventor of rolled toilet paper filed an original patent in 1891 that included illustrations of the paper hanging over the roll.

According to an extensive study by researchers at the London School of Economics and Political Science, people are the happiest at 23 and 69 with a dip in happiness in between.

A hummingbird’s tongue is so long that it curls up into its skull and around its eyes when not in use