The faithful butler for Batmanosaurus and the more diminutive Robinosaurus...
OK, a serious question, demonstrating how long it has been for me since high school paleozoology. The presumption back in my day was that dinosaurs were cold-blooded, like their present-day descendants the gators and crocs. OT1H, a cold-blooded dinosaur in the Arctic would never get anywhere, but OTOH, a 25-foot-long warm-blooded carnivorous dinosaur in the Arctic would require more meat than would reasonably be available...
There’s no single answer to the warm/cold blooded question, and thanks to the march of knowledge, there’s not even two answers anymore. Robert Bakker spearheaded a push for hot-blooded-ness in the dinos, but in nearly 50 years since it isn’t the dominant paradigm. As evidence has accumulated that has been interpreted to mean that the dinos are ancestral to chickens and other birds, the old dichotomy of hot vs cold among critters in general has broken down.
Dinosaur footprint found in Alaska national park
http://www.freerepublic.com/focus/news/1437383/posts
Ocean hot in days of dinosaurs, study finds
http://www.freerepublic.com/focus/news/1581106/posts
Haughton Astrobleme: A Mid-Cenozoic Impact Crater Devon Island, Canadian Arctic Archipelago [39 million years ago]
http://www.researchgate.net/publication/237210205_Haughton_Astrobleme_A_Mid-Cenozoic_Impact_Crater_Devon_Island_Canadian_Arctic_Archipelago