Another animal that hibernates is the bear. Bears hibernate in caves. Bears use very little energy when they hibernate. They breathe slowly. Their hearts pump slowly. But, if they hear a noise, they will wake up.
Photo Credit: Shaber/Shutterstock
Some animals cannot survive in cold weather. Butterflies migrate. They … read more
In 1886 Josephine Cochrane invented the dishwasher. She observed that … read more
Martin believed in peace. He fought hard for equal rights. … read more
© 2025 McGraw-Hill Education. All Rights Reserved.