Cats amaze people with their ability to focus in on some tiny object—say, a gnat or a tiny lizard crawling on the fence. The retina of a cat’s eye contains the area centralis, a heavy concentration of cone cells, and thus the most sensitive area within the entire eye. When your cat “locks in” on something small that had escaped your attention, you can be sure that that object is right in the center of the cat’s area centralis.
