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Originally Posted by Phantasm
Fish - cold-blooded vertebrates that breathe water, includes sharks
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And number of fish species (both shark and bony fish) are not 'cold-blooded' in either the common language meaning or GURPS' meaning.
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Dinosaurs - warm-blooded vertebrate air-breathers with skin or scales that lay eggs
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What if some dinosaurs gave live birth, just as some reptiles and fish do?