There were three mutually exclusive primary
behaviours, standing, lying sternally and lying laterally.
An animal was described as lying sternally if the
main point of contact with the ground was the sternum.
In this posture, the front legs were usually folded under
the animal on either side of the sternum and the hind legs
stretched out to one side. The head was usually upright
although, sometimes, it might be stretched out in front of
the animal with the chin resting on the ground. An animal
was described as lying laterally if the main point of contact
with the ground was the side of the animal.