Dragons are commonly portrayed as serpentine or reptilian, hatching from eggs and possessing extremely large, typically scaly, bodies; they are sometimes portrayed as having large eyes, a feature that is the origin for the word for dragon in many cultures, and are often (but not always) portrayed with wings and a fiery breath. Some dragons do not have wings at all, but look more like long snakes. Dragons can have a variable number of legs: none, two or four. Modern depictions of dragons are very large in size, but some early European depictions of dragons were only the size of bears. Although dragons (or dragon-like creatures) occur commonly in legends around the world, different cultures have perceived them differently. Chinese dragons and Eastern dragons generally, are usually seen as benevolent, whereas European dragons are usually malevolent (there are of course exceptions to these rules). Malevolent dragons also occur in Persian mythology (see Azhi Dahaka) and other cultures.