Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
The head of a jellyfish is called the "Bell."
6
Sloths take two weeks to digest their food.
243
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The seahorse is the only fish to have a neck.
12
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17