Shenhuifu, 6509 random facts you didn't know.

The Loudest Monkeys Have the Smallest Balls

The loudest howler monkeys have the tiniest testicles, a study found.

Much like the athletes, the horses travel to the Olympics by plane.

Congo the chimp was a famous abstract painter in the 1950s who sold paintings to Picasso, Dalí and others for up to US$26,000.

Most mammals, from elephants to shrews, live for the same number of heartbeats, about 1.5 billion, before dying.

FBI Now Tracks Animal Abuse Just Like Homicides, Arson and Assault. Because if you abuse animals, there's a chance you abuse people, too.

When a crow dies, the other crows investigate if there's a threat where the death occurred, so they can avoid it in the future.

A new study suggests that the human genome could contain as few as 19,000 protein-coding genes, fewer than nematode worms.

The Xoloitzcuintli is the national dog of Mexico.

Alaska is so big you could fit 75 New Jerseys in it.

The Red-billed streamertail is the national animal of Jamaica.

India is the world's largest democracy, with 1.38 billion people.

The Hoopoe is the national bird of Israel.

The Bengal Tiger is the national animal of India.

The U.S. purchased Alaska from Russia for just US$7.2 million in 1867.

The African continent has a land area of 30.37 million sq km (11.7 million sq mi).

1.2 million women have an abortion in the U.S. every year.