Jeremiah 5:27

As a cage is full of birds— A trap-cage. כלוב kelub, comes from כלב keleb, a dog; and this name was undoubtedly given to the trap-cage, because it served the same purpose as a dog in assisting to catch game. That sort of trap-cage also seems to be alluded to, in which tame birds are put to hop and fly about as a decoy to others.