T. rex isn’t actually the biggest meat-eating dinosaur ever found. That title belongs to Giganotosaurus - and yes, the name literally means “giant southern lizard.” It lived in what’s now Argentina around 98 million years ago.
Compared to T. rex, Giganotosaurus was slightly longer (about 43 feet), slightly lighter (about 8 tons), and had a longer, narrower skull. Its teeth were more blade-like than T. rex’s bone-crushers - better for slicing flesh than pulverizing bone. Scientists think it hunted big sauropods, sometimes in pairs or small groups.
It belongs to a different family from T. rex altogether, and they lived 30+ million years apart. So if you ever wondered who’d win in a fight - they could never have met.