do they see by tracking movements? I know they have poor depth perception. I've noticed many times a cricket that is right in their site range. They just ate the one right next to it. They appear to star it down for a while, but then turn and go after another cricket. At first I thought they were waiting to see if it was alive, but I've seen them eat dead ones before. IDK maybe they have to be in the mood for dead ones, or it's the excitement of the hunt. I'm just curious.