Derby the dog was born with deformed front legs that left him unable to move faster than a crawl. But now, with the help of a team of orthopedic and 3D-printing experts, he can actually run. Alright, so this is basically a three-minute advertisement for a 3D printing company — but that doesn’t mean it’s not heartwarming (and interesting) as hell.

http://tinyurl.com/q7x6sq9

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