Condoms were originally made of animal intestines or linen.
347
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
Sharks have been on the planet longer than trees.
14
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17