BUMPER STICKERS?
'For this North American member of the family iguanidae <a href="http://www.j-archive.com/media/2004-10-27_J_25.jpg" target="_blank">seen</a> <a href="http://www.j-archive.com/media/2004-10-27_J_25a.jpg" target="_blank">here</a>:<br />"Honk if you're corneus"'
horned lizard (or horned toad)