Snakes have greatly modified their skeletal system from their [[Lizard|lizard]]-like ancestry. Growth is rapid in the first few years and is dependent upon the frequency of [[Snake Feeding|feeding]] and activity. | Snakes have greatly modified their skeletal system from their [[Lizard|lizard]]-like ancestry. Growth is rapid in the first few years and is dependent upon the frequency of [[Snake Feeding|feeding]] and activity. |