How the chameleon is able to aim precisely?

A chameleon about to eat it's prey.

Skilled tongue marksman 

When stalking an insect, the chameleon moves forward at what some people have described as a “painfully slow pace.”

 As it lifts each foot in turn, it moves forward and then rock it's body back and forth before grasping the next twig.

Since it's compressed body somewhat resembles the shape of a leaf, it misleads it's prey into thinking that it is a leaf being disturbed by a breeze.

This bluff is most effective.

While using this slow method of approach, it carefully estimate the distance of it's prey.

Then observes the insect from several angles with it's remarkable eyes, as it is very important that it gets a crack shot the first time it shoots out it's amazing tongue.

Once the chameleon has moved within striking distance, this long, club-shaped, sticky tongue goes into action.

It is controlled by two sets of muscles.

One set runs the length of it's tongue and keeps it packed in “pleats” on a pointed bone at the back of my mouth, much like a spring coiled on a stick.

When the chameleon opens it's mouth, the second set of muscles, which circle it's tongue, squeeze it off the bone.

As it relaxes the long muscles, it's tongue shoots out at great speed to a distance of about total length of the chameleon .

And with that maneuver it enjoys another tasty insect morsel.

No wonder many gardeners are pleased to have the  chameleon around, especially since the chameleons have voracious appetites.

Some larger species of chameleons even include birds in their diet.