. Animal biology. Biology; Zoology; Physiology. SURVEY OF VERTEBRATES 123 'toad.' Closely related to the true Lizards are the Chameleons, famous for their ability to change color rapidly in response to their surroundings. (Figs. 81, 82.) Snakes are essentially limbless Lizards in which even the in- ternal supporting structures of the fore limbs have disappeared. Most species of Snakes, in common with the great majority of Vertebrates except the Mammals, are oviparous (egg-laying), but a few are viviparous (bring forth 'living' young). And it is hardly necessary to say that a few have poison gl
. Animal biology. Biology; Zoology; Physiology. SURVEY OF VERTEBRATES 123 'toad.' Closely related to the true Lizards are the Chameleons, famous for their ability to change color rapidly in response to their surroundings. (Figs. 81, 82.) Snakes are essentially limbless Lizards in which even the in- ternal supporting structures of the fore limbs have disappeared. Most species of Snakes, in common with the great majority of Vertebrates except the Mammals, are oviparous (egg-laying), but a few are viviparous (bring forth 'living' young). And it is hardly necessary to say that a few have poison glands associated with special teeth, or fangs. The Rattlesnakes, Copperheads,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Woodruff, Lorande Loss, 1879-1947. New York The Macmillan company
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