When cats are happy, they may squeeze their eyes shut.
10
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The head of a jellyfish is called the "Bell."
6
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Ants have tiny magnetic compasses in their antennae which help them navigate.
9