When it comes to determining size, length isn't everything. The Length tag implies a corresponding width or girth, but in recognition of the fact that these don't always align, the Width tag was instituted. (In similar recognition of the fact that length and girth might not correspond to weight either, there exists another tag for that; it's entirely possible to indicate a balloon- or blimp-like creature with a very high Width and a very low Weight.)

Unlike either the Length or Weight tags, this has no modifiers or other way of expressing this in units; it was intended to be especially lighthearted. The traditional descriptions are included in italics.

I am Athelind! My belly is now several galaxies wide … while I'm only a few hundred feet long!: Athelind was an early member of the alt.fan.dragons community whose dragon persona was infamously rotund… and still is, judging by the relatively recent furry art that a Google search turned up.

Planets have been known to crack in half with my arrival!

My digestion of food has been known to cause earthquakes.

I move by rolling. Flying has always been an effort for me.

What can I say … I'm normal, except for a few feasts here or there.

I'm slightly on the slim side!

Ever heard of serpentine?

Whoah! Whaddaya mean I look like a long string with wings?“

I'm one-dimensional - all length and no width or depth. Just one long super-string!

My girth depends on what I've just eaten!