Cats and dogs can hear ultrasound.
350
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
Dolphins have names for one another.
18
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268