$toby base

Did you know that toads have a "third eye" for direct light-sensing

I read about this when I used to own bearded dragons! I believe the parietal eye is mainly for detecting overhead predators. 

Reptiles are cold-blooded so they need to bask on hot surfaces to digest food properly. 

But this exposes them to overhead predators on sunny days. The parietal eye senses this danger.

Bearded dragons and reptiles are so interesting. I had no idea they had a parietal eye until I watched a video about it.