Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
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
The colossal squid has the largest eyes in the world.
4
When cats are happy, they may squeeze their eyes shut.
10
The elephant brain weighs about 6,000g.
274
Cats and dogs can hear ultrasound.
350
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Sheep, goats, octopuses, and toads have rectangular pupils.
7