And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is life, I have given every green herb for meat. The first of the three classes of plants, grass, was assigned to the animals for food.
From this Delitzsch infers that prior to the introduction of sin the animals were not predaceous. The geological evidence of the existence of death in prehistoric times is, however, too powerful to be resisted; and the Biblical record itself enumerates among the pre-adamic animals the chayyah of the field, which clearly belonged to the carnivora.
Perhaps the most that can be safely concluded from the language is "that it indicates merely the general fact that the support of the whole animal kingdom is based on vegetation" (Dawson).