The Meat-Eating Bull

One dinosaur I didn’t know when I was six years old
Was Carnotaurus sastrei, and I wish that I’d been told.
The shape could bring to mind a short Tyrannosaurus rex,
Except for an outstanding feature nobody expects—
The only biped carnivore whose frontal bone’s adorned
Obliquely with a pair of 15-centimeter horns!
It hasn’t been agreed how they were used. For killing prey?
Combatting one another? Drawing mates with a display?
Regardless, it is now believed, despite an early claim,
The predator primarily would eat enormous game.
As larger theropoda went, it had impressive speed,
But fusion of the hip and tail made turning hard indeed.
If anything diminishes the creature’s scary charms,
It must be the proportionally tiniest of arms.
(Admittedly, a single well-kept skeleton is known.
It might have been deformed; if so, the rep is overblown.)