Condoms were originally made of animal intestines or linen.
347
Bats sleep 18-20 hours per day.
5
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268