Humans and dogs are the only living things that can perceive visual cues from the eyes of others. Dogs can only do this with humans.
If you happen to have baby blues, you are more special than you know. Did you know that all blue eyed people can trace that special gene back to an ancestor who lived near the Black Sea ten millennia ago? They have also been scientifically proven to have a higher alcohol tolerance and are more sensitive to light.
We know that the dolphin is a highly intelligent creature but it seems to be a highly suspicious one as well. Although humans use the expression colloquially, dolphins actually do sleep with one eye open.
Blinking is something your body does automatically, but it consumes more of your life than you probably would guess. During your waking hours you spend 10% of that time with your eyes shut from blinking.