Caduceus

I don't know why I wrote this, but I know what it means.

If seen from far these snakes are only one

They twist 'round each other wildly

As though they were in mating season fun

Who sees it that way looks idly

A simple glance of one with interest true

To notice that the snakes are hurt

Each of them lacks an eye, and a fang too

What they do here is fight, not flirt

Their bodies intertwined get loose one time

They bite each other on the head

Venom of their kin turns them in bones grime

And none of them was good or bad

Author's Note

The second last line is weird, its rhythm is different from the rest of the poem. Suggestions?