Image: @Jennifer Bowman
Penny, a dog owned by Jennifer Bowman's neighbor, loves to say hello. But a tall wooden fence means that the dog has to jump like it's on a trampoline just to get a glimpse. So Bowman had an ingenious solution: a peekaboo hole for a dog (complete with accomodations for the dog's nose, of course!).
Oh, and of course there's a YouTube clip of Penny peeking through the fence.