08/04/2014 12:58 EDT

Duncan The Two-Legged Puppy Won't Let His Disability Slow Him Down (VIDEO)

Duncan Lou Who is a lean, scene-stealing, two-legged running machine. And he’s only getting faster.

In a video uploaded to YouTube on Tuesday, the nine-month-old boxer puppy shows us he’s no different from dogs with all four legs.

“A lot of people sometimes try to slip [in his disability] and be like, ‘Oh my gosh, he only has—’ I’m like, ‘Shh. He doesn’t know,” Duncan’s owner Amanda Giese said in the video.

Giese and her partner Gary Walters adopted Duncan from a breeder after a supporter of her non-profit animal rescue, Panda Paws Rescue, spotted him in Colorado and asked the pair if they would take him in.

“We hadn’t even seen him, didn’t know what he was looking like,” Giese said.

Duncan was born with severe deformities in his pelvis and hind legs. By the time he was two months old, the bones in his legs had fused and corrective surgery was not an option.

After the adoption, Giese and Walters were given a choice: humane euthanization or double amputation. They chose the latter.

“Everything he does, he’s had to learn the hard way,” said Giese.

Duncan first grabbed the world’s attention last year after a GoPro video of him running around an Oregon beach with an expression of unbridled joy went viral.

Now, six months older, with stronger muscles and the occasional wrapping of athletic tape and padding on his tail to sustain his active lifestyle, nothing has stopped Duncan yet from enjoying life to its fullest.

“Life is 10 per cent what happens to you and 90 per cent what you do with that,” said Giese.

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