During the dinosaur age, some were just massive. Why are modern land mammals, and others so tiny. Comparing a modern tiger to a sabertooth is no contest.
In: Biology
It’s a multi-faceted issue, but one thing I haven’t seen mentioned yet is research regarding metabolism. Dinosaurs are at this point thought to be somewhere between warm blooded and cold blooded. Global temperatures were 5-10 degrees C warmer back then than they are now. You can afford to get bigger if you aren’t spending as much energy regulating your own body temperature in a climate that was substantially warmer than what we have today.
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