Were dinosaurs warm-blooded?

Scientists have contradictory opinions on this subject. Some paleontologists think that all dinosaurs were warm-blooded in the same sense that contemporary birds and mammals are: that is, they had fast metabolic rates. Other scientists think it improbable that any dinosaur could have had a rapid metabolic rate. Some scientists think that very big dinosaurs could have had hot bodies because of their large body size, just as some sea turtles do today. It may be that a few dinosaurs were warm-blooded. The problem is that it is hard to find evidence that indisputably shows what dinosaur metabolisms were like.