Cats and dogs can hear ultrasound.
350
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
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
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12