Yes, and Jesus conquered death by being a sinless sacrifice. The wolf and the lamb will feed together, lions eating straw, no more eating each other, when we get back to the original creation.
Isa 65:25 The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust [shall be] the serpent's meat. They shall not hurt nor destroy in all my holy mountain, saith the LORD.
I agree with you, except for the fact that God dealt out the first sacrificial death on an animal to provide the skins that covered Adam and Eve. Then of course, probably following Adams example, Abel sacrificed one of his flock as an offering to the Lord. The first murder recorded was Cain's murder of Abel.
P.S. Scripturally, plants wither, but don't die. Blood is required for life and death.
Lev 17:11 For the life of the flesh [is] in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it [is] the blood [that] maketh an atonement for the soul.
Meant to ping you to #14 above.
There are a few additional quotes from the bible that are also important:
Deuteronomy 23:1
1 He that is wounded in the stones, or hath his privy member cut off, shall not enter into the congregation of the LORD.
2 Kings 6:29 (King James Version)
29 So we boiled my son, and did eat him: and I said unto her on the next day, Give thy son, that we may eat him: and she hath hid her son.
Song of Solomon 5:4 (King James Version)
4 My beloved put in his hand by the hole of the door, and my bowels were moved for him.
These are important passages we should all take to heart.
Just because there will be no animal death after the coming of the kingdom does not mean there was no struggle or animal death before the fall.
I have yet to see a single Biblical passage that denies animal death before the fall. And no, Romans 5 does not cut it, as St. Paul is clearly speaking of human death and not animal death.