to help ensure success, a bit of the pad wraps around the prey, holding it until the retracted tongue - and food -reaches the chameleon 's open mouth Like most lizards, chameleons to have small, almost transparent, teeth, visible as a serrated ridge when the mouth is open Unlike most lizards, however, chameleons do chew their food, all the while searching for their next prey Like snakes, chameleons have no external ears Chameleons have devolved their sense of smell, relying on vision for locating prey and predators rather than smell or hearing While other reptiles that rely on smell to help them identify objects in their environment, chameleons have only the 
(Chameleons; have devolved; their sense of smell; relying on vision for locating prey and predators rather than smell or hearing While other reptiles) Context(Chameleons have devolved,List([424, 448))):(Chameleons; have devolved their sense of smell relying; on vision for locating prey) (the mouth; is; open) (other reptiles; rely; on smell; to help them identify objects in their environment) (retracted tongue - and food; reaches; the chameleon 's open mouth Like most lizards) (chameleons; have; only the) (chameleons; searching; for their next prey Like snakes) (chameleons; to have; small, almost transparent, teeth)
Chameleons have devolved,List([424, 448))
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their sense of smell relying on vision for locating prey and predators rather than smell or hearing While other reptiles
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on smell to help them identify objects in their environment
the chameleon 's open mouth Like most lizards
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for their next prey Like snakes
small, almost transparent, teeth