I don't have any photographic evident yet, but I have seen Biscuit climb brick walls. I was at the kitchen sink and happened to look out the window just as he scaled the corner of the house. He reached eye level with me, which put him a good six feet or higher off the ground. I was so surprised that I yelled for J to come to the kitchen quick so she could see this amazing sight. However, he had already jumped to the ground by the time J arrived. But she'd witnessed Biscuit's wall climbing skills earlier in the week. I was just catching up to his latest amazing feat.