The Fall of Man
What did animals eat before the fall of man?
Animals ate fruit, vegetables, and everything natural before Adam and Eve sinned in the garden. We know this not only because God said that the earth was "Very good" in Genesis 1:31, but we also find that God said in Genesis 1:29-30, "I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food. And to all the beasts of the earth and all the birds in the sky and all the creatures that move along the ground—everything that has the breath of life in it—I give every green plant for food." It is very obvious that "everything that had the breath of life in it" ate natural plants or food.
According to Genesis 3:14, God cursed both the serpent for tempting Eve into sinning. But right in the middle we see God telling the serpent he will eat the dust of the ground. Every time that snakes open their mouth and flick their tongue out, they gather dust off the ground and put in in their Jacobsons organ to read the smell, thus eating the dust of the ground.