Things you know that make people think, 'Why do you even know that?'

[Ado]

It doesn't have to be something nobody else knows if it's interesting.
I, for instance know that the Platypus has 52 chromosomes.

[Alison Livas]

Sea Cucumbers have five tooth like spikes around their anus to protect them from any bacteria who might want to make a home in their bodies. The also can "eject" bits of their digestive system through their anus to escape preditors. This animal basically relies on it's anus for survival.

[Alison Livas]

A duck's quack doesn't echo...no one really knows why.