this post was submitted on 30 Jan 2025
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don't wanna fight, but i do want some clarification:
were they actually warm blooded, or that pseudo warm blooded thing some reptiles and fish do where they aren't exactly warm ir cold blooded, but kinda in-between?
Oh, you're no fun anymore.
In all seriousness, thanks for bringing up that concept. On the surface, we generally group animals into endotherms and exotherms, but the reality is much more diverse, as you pointed out. Certain species of Tuna do make it into the category of endotherm because they generate enough heat internally to make a significant difference, however their body temperature is still largely variable depending on the surrounding environment making them also poikilotherms. Whereas mammals and birds are generally endotherms and homeotherms. I'm skipping over the concepts of hibernation and torpor in our bear and hummingbird friends, respectively, because that's a whole other can of worms. In conclusion, I believe T. Rex, and many other dinosaurs, were both endotherms and homeotherms.
excellent, that was very helpful! thanks!
dinosaurs were all kinds of -blooded, but t-rex was probably fully warm blooded, like birds. Other, especially "older" ones were cold blooded.
thank you, that's exactly what i wanted to know!
Thanks for adding perspective on this. I agree that it's a much more diverse situation than just giant lizards running around. To add to this, I think it's also likely that other theroppds were also warm-blooded in addition to T. Rex.