1. Believe it or not, pineapples take two years to grow.
2. Cheetahs can't roar. They can only meow like domestic house cats.
3. Scientists who work with cockroaches often become allergic to preground coffee.
This means exactly what you think it means.
4. Around the world, many militaries have trained combat dolphins to perform dangerous tasks, like locate underwater mines.
A US Navy-trained dolphin in a photo from 2003.
5. Bananas are berries, but strawberries are not.
Weird but true.