Possible Clues:

• Gecko's cousin
• Pet invariably named Iggy or Juana?
• Reptile in America fed on endless manure
• Follower of a Jul 31 rising is a lizard
• Galapagan lizard
• Nocturnal reptile from Tennessee
• Critter in a Tennessee Williams title
• Tropical tree-lizard
• Central American critter
• Relative of a chuckwalla