18 of the strangest animals ever

Tiny but tough
Don't be suckered by this pocket-sized nugget. The lowland streaked tenrec, which is endemic to Madagascar, is covered in quills that can easily be dislodged if it feels threatened.

The tenrec's quills are more than just protective. The small forager is the only mammal known to use stridulation, or the rubbing together of body parts, to generate sound.