During the colder months these reptiles remain in a torpid state.
Among reptiles the various kinds of lizard are noticeable.
These great reptiles may attain a length of To ft.; they feed on small animals which they crush to death in their folds.
Thus it has come to pass that the muscles of the hind limbs are, like their framework, more easily compared with those of reptiles and mammals than are the wings, whilst within the class of birds they show an enormous amount of variation in direct correlation with their manifold requirements.