What metaphors are used in Horseman, Pass By by Larry McMurtry?

In Chapter Five, Hud's treatment of Halmea could be considered a metaphor for his viewpoint of the ranch. Just as Hud wants to take all of Granddad's cattle, Hud tells Lonnie that "You ain't got no private milkin' rights" (Ch. 5, p. 68). This shows that Hud sees Halmea as just another piece of property on the ranch, which ought to be his, so he will take what he can get.