Watch How 3-Legged Dog and Boy with Rare Condition Saved Each Other

Meet Owen Howkins, a 7-year-old from England who suffers from Schwartz-Jampel syndrome, a condition which leaves his muscle in a permanent state of tension.

Owen didn't like going outside or meeting people but that all changed when his family decided to adopt a three-legged Italian shepherd named, Haatchi. The dog survived being hit by a train after someone tied him to a railway line.

They are now the best of friend and are inseparable. The video has been view over 1 million times and their story has now been made into a book.