An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Condoms were originally made of animal intestines or linen.
347
Dolphins have names for one another.
18
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 male seahorse carries babies and 'gives birth' to them instead of the female.
7
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20