transcription: SUMMARY: We, the U.S. Fish and Wildlife Service (Service), determine the eastern puma (-cougar) (Puma (=Felis) concolor couguar) to be extinct, based on the best available scientific and commercial information. This information shows no evidence of the existence of either an extant reproducing population or any individuals of the eastern puma subspecies; it also is highly Humans: *hunts all the predators: Nature: *number of prey increases* Humans: *hunts all the healthy prey and leave the sick* Nature:*ecosystem colapses* Humans: