Dolphins sleep with one eye open!
52
Jellyfish as a species are actually older than dinosaurs and sharks.
383
In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
Some ribbon worms will eat themselves if they can't find any food.
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A baby octopus is about the size of a flea at birth.
40
On average, there's 300 billion neurons in the octopus brain.
129
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The abdomen of the ant contains two stomachs. One stomach holds the food for itself and second stomach is for food to be shared with other ants.
113