The name Carnotaurus means “meat bull.” This 25-foot predator lived in what’s now Argentina around 70 million years ago, and it had something no other predatory dinosaur had: a pair of stubby, bull-like horns over its eyes.
Scientists think the horns probably weren’t weapons against prey - they’re too short and blunt. More likely, Carnotaurus rivals head-butted each other to settle who was strongest, the way modern goats and rams do.
Its arms were extreme too. T. rex arms get teased for being small, but Carnotaurus’s are tinier still - almost flipper-like, hanging uselessly at its sides. Carnotaurus had no need for them: it was built for speed, with long muscular legs that could probably outrun almost any other dinosaur of its size.
