More like engineering, I guess. But if you end up with a whole new species, and it's functional, I don't know what the difference would be to that particular species.
And what if we brought back extinct animals, how would that effect evolution? Or, think about a mouse with a human brain. If it started communicating with us, even though its brain is human, it would be communicating from the perspective of a mouse. What kind of impact would these things have on our own evolution? This actually does bring up interesting questions to evolution discussions...maybe it is worthy of a ping?