Andesaurus

A species of dragon which has existed since ancient times. With its long neck and tail, it towers over humans. It attacks by flailing its rock-hard head around, which can knock even the largest of monsters unconscious. They are generally docile, but once in a rampage, they become so uncontrollable that not even a carnivore can go near it. On the other hand, their size makes them so slow in sensing the presence of others that some brave souls have even treaded beneath them without them noticing.