We’re all familiar with animals that hibernate in the winter, like bears and groundhogs. There’s another class of animals that “estivate”–meaning they enter a state of dormancy in the summer/warm weather months. Here are three noteworthy examples. We’re all familiar with animals that hibernate in the winter, like bears and groundhogs. There’s another class of animals that “estivate”–meaning they enter a state of dormancy in the summer/warm weather months. Here are three noteworthy examples. Science, /science, Innovation, /innovation, Science, /science, standard