This dog was reunited with its owner after walking 500 miles

One of the happiest reunions in the history of man's best friend happened this week, and you won't believe the lengths they went to find each other.

Here's Nacho--a man from Uruguay--and Negro, aka "the dog that walked to the world cup," together at last.

So how did this happen? It's quite a tale. (Or should I say, tail?)

When three soccer fans from England learned that northeast Brazil was experiencing its worst drought in 50 years, they came up with the idea to raise money for relief efforts by walking to the World Cup.

They met plenty of friends on their journey, including a dog in Uruguay. Assuming he was one of the strays they had met along the way, they let him tag along. They'd later call that decision an accidental dog-napping.

As the trekkers gained fame throughout South America and the world, so did the dog. "Jefferson," as they called him, became something of a mascot for the cause.

Finally Nacho, Jefferson's owner, saw him on the news. When the England fans got a call from him, they were nearly to their destination in Brazil. Nacho hitchhiked the distance his dog had walked, and the rest, as they say, is history.

Enjoy the World Cup festivities, Negro/Jefferson. You've earned it.