Why do frogs croak aloud?

a poem by Christuraj Alex

Why do frogs croak aloud as though big spell?
Snakes are all around to sing their death knell.
As they just cannot when danger comes, yell,
Why do frogs croak aloud as though big spell?
Frogs know they’re ever in great danger dwell.
This world, for them, is less heaven, more hell.
Why do frogs croak aloud as though big spell?
Snakes are all around to sing their death knell.

(A Triolet Poem)