Because he feels, and they prey upon his miserable feelings.
And on that she departed, craftily, leaving her suggestion to prey upon his mind.
We had no sooner settled down in a comfortless inn than the underlings of the various officials came to prey upon us.
We've got to be wolves and prey upon the poor lamb in her moment of defenselessness.
But when food is scarce it will kill and devour small animals, and has even been known to prey upon its own kind.
For they prey upon one another, those men, as readily as they prey upon society.
So it was that Agrippa joined the household and sought to prey upon twittering sparrows.
Both take their prey upon the wing; but herein lies the difference.
Perhaps they were pursued by wolves, which were always loitering about the herds at that season to prey upon the young calves.
There is a despised class of pawn usurers who prey upon the poor.
mid-13c., "animal hunted for food," also "that which is taken in war," from Old French preie "booty, animal taken in the chase" (mid-12c., Modern French proie), from Latin praeda "booty, plunder, game hunted," earlier praeheda, related to prehendere "to grasp, seize" (see prehensile).
c.1300, "to plunder, pillage, ravage," from prey (n.) and in part from Old French preer, earlier preder (c.1040), from Late Latin praedare, from praeda (see prey (n.)). Its sense of "to kill and devour" is attested from mid-14c. Related: Preyed; preying.