One has to define what "natural selection" is. On one hand, you have people who believe that natural selection is what would happen in the wild without man's interference. But I contend that's flawed reasoning. Man has influenced every part of the globe by his very existence (sorry to the women out there, I'm using the collective "man"), so who is to say what the earth would look like had man never existed?
We're trying to regulate fishing (hubby in the Coast Guard can attest to this), save the whales, find "extinct" species, save the rainforests, have created species like Catalina macaws and picasso clownfish, regulate our own propagation...
Where's the line? I'll call it fate, perhaps... lets say we nuke ourselves out of existence from our sheer stupidity (OK, vast simplification but bear with me) and there's more species that survive the apocalypse that were "created" by us or bred for certain characteristics than species that were "naturally" evolving. So who's to say that's not "natural selection"?
Let's call it the "It's a Wonderful Life" theory.
Sometime I'll expound on my dolphin and aliens theories.
BTW, just FYI, I believe that Catalinas are infertile.
And yes, I too have a house full of adopted creatures!