Animals

A duck’s quack doesn’t echo, and no one knows why

A tarantula can live without food for more than two years

Camels are called “ships of the desert”

In the history of the Earth, we are closer to the Tyrannosaurus rex than the T. rex is to the stegosaurus

Octopuses have three hearts

A crocodile can not get his tongue out of his mouth

Penguins make their marriage proposal by offering a pebble

A scorpion can hold his breath for 1 week

Otters sleep by standing by the paw