In the past, people hated and hunted wolves because they are predators who live off other animals. Sometimes, wolves hunted cattle and sheep. Because gray wolves weed out old, weak, and sick moose, deer, or caribou, they stop the prey species from breeding without control. When that happens, there are too many moose (or deer or caribou) for the land to support, and many starve to death. So wolves, and all predators, help to balance nature. Now we know that any protected habitat within the wolf's original range cannot be complete without a healthy wolf population. A successful reintroduction effort seems to be paying off in Yellowstone National Park. NWF was involved with this reintroduction effort and continues to monitor its success.
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