To find and to catch its prey, a predator depends absolutely upon its acute senses. Prey must often be located from a distance, and an actual attack requires accurate orientation, stealthy approach, and judgment of distance. Weasels, especially the smaller ones, hunt often in burrows or dense cover or in the dim silence under the snow, so hearing and smell are important in finding prey. But weasels also have the sharp eyes, with binocular vision to judge distance, needed to catch and kill prey in broad daylight. As weasels are often themselves prey for other, larger predators (Chapter 11), their keen senses also alert them when they are in danger of becoming a meal rather than finding one.
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