If I hadn't seen this with my own eyes, I might not have believed it.
One afternoon we looked out through our dining room window and witnessed our dog, Pepper, climbing a tree. She was after a squirrel and was bound and determined to climb as high as she could in order to reach her target. It was hilarious to watch . . . she would jump up, climb the branches, jump down, and start all over again. We're not sure how or when she learned this . . . we've never coaxed her up the oak tree . . . she's just a determined dog, and I guess where there's a will, there's a way.
If you double-click on the images, you'll get a better view.