It! The Terror from Beyond Space(1959)

Mary Royce: Every bone in his body must be broken. But I'm not sure that's what killed him. Lt. James Calder: Mars is almost as big as Texas, maybe it has monsters. Col. Van Heusen: There's only one kind of a monster that uses bullets. Maj. John Purdue: It's got to kill us or starve and we've got to kill it or die. Spokesman at Press Conference: Another name for "Mars" is "Death". Col. Edward Carruthers: What is the usual reason an intelligent creature'd kill us? Mary Royce: It's hungry? Col. Edward Carruthers: We were almost back to the ship when Cartwright just disappeared. One minute he was there and the next minute he was gone as if something just plucked him out of the jeep... like candy out of a box.