Dogs have been man's pet for over 14,000 years.
224
A group of unicorns is called a blessing.
304
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The seahorse is the only fish to have a neck.
12
Only 3% of bird species have penises.
0
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