Possible Clues:

• Lizard protected by Antiguan anthropologist
• Lizard found in Antigua, naturally
• Dewlapped creature
• Pet that needs ultraviolet lighting
• Creature whose tail makes up half its body's length
• Reptile destabilising university again
• Lizard - one moving northward in part of S America
• Lizard with a long tongue
• Dewlapped lizard
• Greenish creature