Job 39:8

The range of the mountains [is] his pasture, and he searcheth after every green thing.

Ver. 8. The range of the mountains is his pasture] There he keeps, probably, for fear of lions and other fierce creatures; and there he finds food and forage, such as doth not only appease his hunger, but excite his appetite; as if he were in some fat pasture.

And he searcheth out every green thing] Speeding better in his search than those asses of Hetruria, which, feeding upon green hemlock, are thereby laid for dead for three days; till half hileded by the countrymen, who take them for dead, they start up, and with a horrible noise run away in that pickle.