Ectotherms are organisms whose internal heat sources are of small importance in maintaining its body heat temperature. Instead, these organisms rely on heat sources in the environment. These types of animals usually live in environments that are normally constant in temperature where they can look for shade when needed or lay under the sun. During cold weather periods, a couple of ectotherms enter a torpor state where their metabolism either slows down or completely stops. A few examples of ectotherms are snakes, lizards, and turtles.


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