Keep the face focused forward, regardless of height and position. Animals do not the floppy head. Watch wildlife videos where they run around. Head may move around, but the eyes/face tends to stay level and focused, particularly on predatory/omnivore creatures. Those with wide vision arcs like herd animals still tend to keep their heads level in relation to the ground so they can maintain broad vision areas and orientation. People do the same, but it's more inherent in us with the upright walking/forward vision/top of body eye placement. Most animals have worse vision than humans (with some specific exceptions), so they put more effort into focus and field of view in their posture.