Typically, lizards have cylindrical bodies with four legs, a long tail, movable eyelids. Snakes are legless reptiles with no external ear openings, eardrums, or middle ears; sound vibrations are detected through the ground. Their eyelids are immovable. The long, forked, protractile tongue is used to detect odors. Poisonous species have hollow or grooved fangs, through which they inject venom.
Related category• ZOOLOGY
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