19 For the earnest expectation of the creature waiteth for the manifestation of the sons of God. 20 For the creature was made subject to vanity, not willingly, but by reason of him who hath subjected the same in hope, 21 Because the creature itself also shall be delivered from the bondage of corruption into the glorious liberty of the children of God.
That’s a great passage. People seem to forget that we won’t be spending eternity as disembodied ectoplasm strumming harps in heaven. A new earth will be created, and we will be given new, incorruptible physical bodies to dwell on that new earth. It will be as it was meant to be in Eden, before the fall. Hard to imagine no animals there.