Related Clues:

• Dinosaur, e.g.
• Snake, for one
• Herpetologist's subject
• Basilisk or boa
• Snake, e.g.
• Viper, for one
• Go over and over
• T. Rex, for one
• Despicable sort
• Creepy one?
• Gator or gecko
• Cold-blooded vertebrate
• Monitor or moccasin
• Lizard, e.g.
• Its blood runs cold