Born with severely twisted hind legs that threatened his spine, Duncan Lou Who the boxer puppy is now bounding around with all the energy a puppy should display, thanks to a surgery that removed both of the deformed legs. The associated spinal problems would have progressed, causing debilitating pain, if his legs had been left intact. Duncan will undergo physical therapy, and he'll soon be fitted with a custom wheelchair. "This puppy is the definition of perseverance, and he has so much to teach all of us. Duncan Lou Who is living a happy life regardless of his aesthetic differences," said Panda Paws Rescue founder Amanda Giese.