The Cheshire Caiman

Peru has a caiman named Coco,
A mother, herself kind of small.
I saw her by flashlight one evening.
My tour group was having a ball.

What stood out to me was her method
Of making herself disappear:
She’d turn her head upward while sinking
So only her mouth was left clear

Of the water, if just for a moment.
That mouth has a permanent smile.
I deemed her a Cheshire Cat likeness,
Which made the whole trek worth my while.