some kind of mysterious liquid be make animal grow to humongous size . they soon start attack human . eventually and rat become the dominant specie . food of god be bad even by director bert i. gordon standard . the visual effect be unrelentingly awful but they take a backseat to the woeful acting of the undistinguished cast . you know youre in for it when the hero be play by none other than marjoe gortner and an actor who be creepy even when he play it straight . what more depressing and the fact that this garbage be even make or the fact that screen legend ida lupino be reduce to appear in stuff like this near the end of her career . base on the novel by h. g. well and who must have roll over in his grave . like you and he too would surely be root for the animal in this mess .