Scientists have found a new way to tell whether dinosaurs were hot- or cold-blooded.
, there are growing signs that dinosaurs may have been warm-blooded animals.
. Mesotherms, like today's turtles, do burn internal energy to regulate their body temperature like endotherms, but not to the same level and consistency as mammals and birds do. "Metabolism is how effectively we convert the oxygen that we breathe into chemical energy that fuels our body,"Wiemann. That conversion process makes side products that interact with our bodies' proteins, sugars, and lipids to form chemically stable waste. Animals that are warm-blooded need a higher metabolism to fuel themselves.
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