![]() At the bottom of a pond, this stance provides stability against any activity that might dislodge it from its winter refuge.Īn active frog keeps its eyes open (top photo) to be aware of events in its environment. In contrast, the same frog spreads the legs into a "four-point stance" after its body temperature has dropped to near freezing. Notice its upright stance, with back legs tucked close to the body ready to jump if startled. The frog on the left is warm and active, therefore it has a high level of metabolic activity. To enter hibernation, several changes in position and behavior can be seen. At least its nostrils are above water (above photo) and the throat area can be seen moving as it pumps air into the lungs. Because water is a good insulator and retains heat better than other environments, it is a good place to wait out the winter.Īn active frog breathes oxygen from the air. ![]() Some species jump into the water and prepare to hibernate at the bottom of ponds or under the banks of streams. ![]() When temperatures approach freezing, most species of frogs seek protection below the freeze line. ![]() The rate of metabolism is very reduced so not a lot of energy is required. The best strategy to handle the problem is to hibernate and live off of stored fat. During the winter, low temperatures make it very difficult to be active and food shortages further contribute to this problem. Amphibians and reptiles are ectothermic, which means that they get their heat from the environment. ![]()
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