Hmmmm, we know how long most dinosaurs lived, the t-rex lived to be about 30, we know this by counting the rings on their rib bones. you can watch a video about this on Nova ScienceNOW's website. its quite interesting. and why don't dragons look anything like dino fossils? there was no dinosaurs that looked anything like any drawing of dragons. this argument was proven wrong many times. humans and dinosaurs never lived at the same time, sorry. the wolf and dog thing, is based on personality science never claims to know their personalitis. we can tell their diet based on teeth yes, but we never know this 100%, we are doing the best we can with the knowledge we can observe.