A Challenge Answered

You ask if I fight? A low rumble tore from my throat before the thought even cleared. I stalked out from the dark shade of the fern fronds. Right on the sill, a thick cardboard tube stood upright, tall and unyielding like a trespassing beast. I didn't hesitate. I dropped my center of gravity, lunged forward with a sharp hiss, and rammed my heavy snout straight into its flank. It wobbled, lost balance, and crashed flat against the wooden sill with a hollow boom. I stomped one claw onto its crushed rim, head thrown back in dominance. I fight. I conquer.