If your want to look at successes, corn, albeit with some modifications, and domesticated animals, have also been really successful at making sure their DNA reproduces.
Crops, pets, and livestock are symbiotic with us, they don't hurt us. The things I listed harm their host, they had to be in that category to make the point that harming us doesn't require high IQ — the harms we suffer from corn very much count as our own fault.
