Eckhart Tolle comments on animals' heightened alertness as a survival mechanism, using birds and deer as examples. He notes birds' constant vigilance and deer’s large, mobile ears; when threatened a deer can remain motionless and effectively blend with its environment. The remark emphasizes that animals must be alert to survive.
Animals have a high degree of alertness. Look at birds. Why are they so alert? Because it wouldn't be alive anymore if it weren't. Or deer. Their ears are enormous and at the slightest sound, the ears move towards the sound. And when there is some possible danger, the deer remains totally motionless for several minutes. Any animal cannot distinguish between the deer and the trunk of a tree or so. Why are they so alert? Because they need to be. They need to survive.
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