SNAKES have a unique sensory system for detecting infrared radiation, with which they can visualize temperature changes within their immediate environment. Using this special sense, they can image the body heat radiating from warm-blooded animals nearby. This enables them to track their prey quickly and with great accuracy, even in the dark, and to target the most vulnerable parts of the prey's body when they strike. It also warns them of the presence of predators, and may be used to find appropriate locations for building dens.
Infrared detection is known to be mediated by a specialized…
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