A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Bats sleep 18-20 hours per day.
5
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
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
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Nicole Kidman is scared of butterflies.
65
In the movie 'The Wizard Of Oz', Toto the dog's salary was $125 a week, while Judy Garland’s was $500 a week.
5