Zzzzzz. Oh, hi — we were just hibernating! You probably know that lots of animals hibernate during the winter. But do you know why they do it? Or what they need to do to ensure that they have enough food for those winter months? In this BrainPOP UK movie on hibernation, Tim and Moby will tell you why most hibernating animals are much smaller than bears — and why many scientists don’t believe that bears hibernate at all! Find out why animals like bats, marsupials and rodents hibernate and how it affects their breathing, heart rate and body temperature. Plus, you’ll learn about the role that stored fat plays in hibernation. This is one movie you won’t want to sleep through!