There's an isolated tribe in Zimbabwe where the people have only two toes, dubbed the 'ostrich people'.
10
If you put two straws in your mouth, one inside a drink and one outside it, you won't be able to drink through either straw.
202
The Basenji dog is the only dog that is not able to bark.
4
In 1987, a Chicago TV station had its broadcast interrupted by a pirate signal that shows a man in a Max Headroom mask mumbling and being spanked with a fly swatter. Despite investigations by the FCC and FBI, this became the only known incident in which a hacker interrupted a major TV broadcast without getting caught.
19