Sleeping through winter is hibernation, but sleeping through summer is called what? A - Estivation
B - Brumation
C - Illuviation
Answer: A - Estivation Animals have an amazing ability to adapt and survive in different environments. As the weather turns cold, many animals will hybernate to get through the winter. But hibernation isn't the only type of dormancy an animal can experience. Estivation is a state of animal dormancy in response to high temperatures and dry conditions. Their breathing rate, heart rate and metabolic rate decrease to conserve energy. Many reptiles and amphibians estivate and some mollusks, insects, fish and mammals will estivate as well.