Romans 8:17 And since we are children, we share his treasures -- for everything God gives to his son, Christ, is ours too. But if we are to share His glory, we must also share His suffering.
Romans 8:19 For all creation is wating eagerly for that future day when God will reveal who His children really are.
A lot of people forget that when man committed the first sin, not only did we fall but creation fell as well. The first time an animal was killed was for Adam and Eve to clothe themselves after they sinned. There was no death, no killing, no predators, no food chain. There was peace, love, and joy. But after the fall a different plan went into effect. There HAD to be a food chain so God could take care of his creation. The animals, birds, organisms, atoms, EVERYTHING shouts of His glory. But they, like us, are waiting for His return. Waiting to be new, waiting to live in Eden once again.