Related Clues:

• Hall pass checker
• Animal that climbs cactuses to eat their flowers
• Large arboreal lizard
• Creature that's scaled high, guy can't say is totally wingless
• Set up office divided by metal screen
• Grey-green lizard of tropical America
• Like to monitor typos in Guardian? No way!
• Lizard with a crest
• Lizard with a third eye
• Large tropical American spiny-backed lizard
• Lizard in India and South American country? Not unknown
• Galápagos lizard
• Large lizard with dewlaps
• Antiguan American relocated, wanting 'No Trumps' -- cold-blooded creature!
• Spiny reptile