Penni the pit bull has traversed thousands of miles alongside her adventurous owner. ➡ Subscribe: bit.ly/NatGeoWILDSubscribe About Nat Geo Wild: Welcome to a place so wild, anything can happen. Nat Geo Wild is the network all about animals from National Geographic, where every story is an adventure and your imagination is allowed to run wild. Get More Nat Geo Wild: Official Site: bit.ly/NatGeoWILD Facebook: bit.ly/NGWFacebook Twitter: bit.ly/NGWTwitter Instagram: bit.ly/NGWInstagram Penni the pit bull was locked in a small basement from the start of her life, and she didn't learn how to run until much later. When she was one or two years old, she was rescued by the nonprofit group Fur Friends in Need. Now, she is happily climbing mountains with her new owner. She's a seasoned adventure dog experienced in long-distance hiking, rappelling, and even zip-lining. Penni's owner says despite her abusive upbringing, she's fearless in the wild. Read more in "This Once-Abused Dog Is Now an Avid Mountain Climber." www.nationalgeographic.com/adventure/features/rescue-dog-mountain-climber/ This Rescued Dog is an Avid Mountain Climber | Nat Geo Wild youtu.be/sUdPjn7w14A Nat Geo Wild www.youtube.com/user/NatGeoWild