During our research of the arctic fox, we discovered Dr. Maarten Loonen, a biologist who studies in the Arctic Circle. We learned so many cool things that we hadn't known about before, not just about the arctic fox but about other animals, too. Like the amazing journey of the arctic tern, and how to tell whether Rudolph is a boy or a girl reindeer.  We hope you enjoy listening as much as we enjoyed speaking to Dr. Loonen.