Condoms were originally made of animal intestines or linen.
347
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Dogs sometimes fake being sick to get attention.
26
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Sharks have been on the planet longer than trees.
14