sentence: Some animals use both strategies.
sentences_before: In animals with forward-facing eyes, the eyes usually move together.
sentences_after: A starling, for example, has laterally placed eyes to cover a wide field of view, but can also move them together to point to the front so their fields overlap giving stereopsis. A remarkable example is the chameleon, whose eyes appear to be mounted on turrets, each moving independently of the other, up or down, left or right. Nevertheless, the chameleon can bring both of its eyes to bear on a single object when it is hunting.
concept_name: animal
headings: Binocular vision Field of view and eye movements
categories: Vision Physiology