I think the interesting conundrum will occur when a higher form of animal (reptile or mammal) evolves to the point where it can only survive in a toxic waste dump. Then you will have to choose between cleaning up toxic waste and destroying the habitat of a new species, or preserving the species and dealing with the side effects of the toxic waste.
To date I believe there are only insect cases that have done this (less outrage when you kill off a new species of roach)
That being said, given the AIDS virus in apes, given that apes were being hunted, and given that there was lots of needle re-use going on, the rise of AIDs as a scourge was pretty much a 100% probable, regardless of 'who' was the alpha 0 patient.
To date I believe there are only insect cases that have done this (less outrage when you kill off a new species of roach)
That being said, given the AIDS virus in apes, given that apes were being hunted, and given that there was lots of needle re-use going on, the rise of AIDs as a scourge was pretty much a 100% probable, regardless of 'who' was the alpha 0 patient.