A minute poem may rhyme, but doesn't necessarily have to. It's composed of three stanzas with the first line containing eight syllables with the other three lines containing four syllables.
The caged bull paces restlessly
Without free will
Preparation
Before the show
A bell signal rings loud and clear
Only one man
Versus the bull
Hushed audience
The action suddenly picks up
Cape of bright red
Angering it
Matador wins
The crowd goes wild