A number of snakes and insects are among some of the animals that use thermal location, heat vision or whatever you may call it. There is also infra red vision, which is somewhat different but in the same genre, of which many other animals utilize; goldfish can see a low level of infra red light. However as a general rule only ectothermic animals – animals that have the same temperature as the environment that they live in, or cold-blooded – will have the ability to sense a heat signature as animals like us would be blinded by our own heat.
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