Evolutionarily, at some point we were similar to rodents, nocturnal so that massive reptiles wouldn't hunt us. It's ironic that millions of years later we had a TV show called The Crocodile Hunter,

... a TV show featuring a human 'hunting' big reptiles.

"From Eucynodontia came the first mammals. Most early mammals were small shrew-like animals that fed on insects and had transitioned to nocturnality to avoid competition with the dominant archosaurs — this led to the loss of the vision of red and ultraviolet light (ancestral tetrachromacy of vertebrates reduced to dichromacy)."

- https://en.wikipedia.org/wiki/Timeline_of_human_evolution

Image by Nobu Tamura https://commons.wikimedia.org/wiki/File:Repenomamus_BW.jpg