If evolution is true, why don't scapegoats evolve?

Evolution wants to do away with the need for a Creator, so why not? If Christ is not necessary for Creation, perhaps scapegoats should evolve. A scapegoat would simply exist to bear the abuses of the rest of the species.

If you want to mould evolution to fit the evidence, you can always start with the placenta for scapegoat hopes. The placenta exists solely to feed the newborn child and dies when this job is done. Similarly we could expect to find scapegoats for entire species.

There is one problem with this theory though: God cares. There is no way that God would create a creature solely to suffer punishment; even Christ will rule in His Kingdom for a thousand years. The theory of evolution will never see evidence of scapegoat creations because God will not allow it: it is not part of the design!