He is always hungry.
He is always poor, out of luck and friendless.

The meanest creatures despise him, and even the fleas would desert him for a velocipede.

He is so spiritless and cowardly that even while his exposed teeth are pretending a threat, the rest of his face is apologizing for it.

And he is so homely!--so scrawny, and ribby, and coarse-haired, and pitiful.
When he sees you he lifts his lip and lets a flash of his teeth out, and then turns a little out of the course he was pursuing, depresses his head a bit, and strikes a long, soft-footed trot through the sage-brush, glancing over his shoulder at you, from time to time, till he is about out of easy pistol range, and then he stops and takes a deliberate survey of you; he will trot fifty yards and stop again--another fifty and stop again; and finally the gray of his gliding body blends with the gray of the sage-brush, and he disappears.

All this is when you make no demonstration against him; but if you do, he develops a livelier interest in his journey, and instantly electrifies his heels and puts such a deal of real estate between himself and your weapon, that by the time you have raised the hammer you see that you need a minie rifle, and by the time you have got him in line you need a rifled cannon, and by the time you have "drawn a bead" on him you see well enough that nothing but an unusually long-winded streak of lightning could reach him where he is now.