Consider the Chameleon

Consider the chameleon,
The master of disguises.
The enemy of insects,
The butterfly despises.

He sits on a leaf
And turns himself green.
And though he sits there,
He seldom is seen.

His tongue is long,
And covered with sticky.
He’ll eat any bug,
He’s certainly not picky.

If  there’s nothing there,
When you look in a tree.
It’s just a chameleon
That you didn’t see.