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No Place for Predators?

Figure 3

A Cougar Paw

Cougars tend to keep their claws retracted when not in use, which is why their tracks leave no claw marks. A large male kills on average one deer or elk every week to 12 days and may stalk its prey for an hour or more, then attack with a sudden burst of speed, aiming for a quick kill by breaking the animal's neck. (Rich Beausoleil, WDFW)

Figure 3

doi: https://doi.org/10.1371/journal.pbio.0060040.g003