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Though humans nearly hunted wolves to extinction in the lower 48 states, Gray Wolves have returned to the Great Lakes, northern Rockies and Pacific Northwest.
Wolves play a key role in keeping ecosystems healthy. They help keep deer and elk populations in check, which can benefit many other plant and animal species. The carcasses of their prey also help to redistribute nutrients and provide food for other wildlife species, like grizzly bears and scavengers. Scientists are just beginning to fully understand the positive ripple effects that wolves have on ecosystems.

Learn more about wolves and efforts to protect them at Defenders of Wildlife and Earth Justice.
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