The way this pup thrives -- despite only having two legs -- is truly amazing.

In this video from the GoPro series, we learn all about Duncan Lou Who, an adorable boxer puppy whose legs were removed due to a severe birth deformity.

Although we've admiredDuncanfor a while, this new video delves deeper into his journey to a full, vibrant life with only two legs.

Amanda Giese, founder of Panda Paws Rescue and Duncan's owner, got the pup when a supporter of her organization paid a visit to his family and noticed that the breeder next door had a puppy with obvious birth defects. Giese agreed to take Duncan before even seeing him. Once he arrived, she was given the choice to either euthanize him or remove his two hind legs -- she chose the latter.

"Anything any four-legged dog has that comes naturally that they do, Duncan has had to learn how to do in his own way," Giese says in the video. "Even how he reaches his dog bowl, how he goes up and down stairs."

Since his legs were removed, Duncan has had two wheelchairs, but has refused to use them -- Panda Paws ended up donating them to other dogs in need. Now, Duncan will live with just two legs for the rest of his life. He's not a candidate for orthotics or prosthetics because there's nothing to attach them to.

But this has not deterred Duncan from living life to the fullest.

"Life is 10 percent what happens to you, and 90 percent what you do with that," Giese says in the video.

And now, at 9 months old, Duncan continues to be the spunky puppy who first stole our hearts.

We're rooting for you little guy!