This tiny Australian shepherd attempted to play tug-of-war with a much larger pit bull in their Las Vegas home.

Blue, a 1.8-kilogram puppy, is seen trying her best to compete with Thor, a 43-kilogram pit bull.

After just a few tugs from Thor, Blue is sent flying.

The filmer told Newsflare: "This has got to be one of the funniest videos I've shot in a long time.

"Thor the 95lb pitbull was fascinated with my new puppy Blue who is a 4lb mini Aussie.

"It took her some time to warm up to him, he is very intimidating whether you are a dog or person, but the big boy is nothing but love and he and little Blue became fast friends and a game of tug-of-war began."

This footage was filmed on July 19.

This has got to be one of the funniest videos I've shot in a long time. Thor the 95lb pitbull was fascinated with my new puppy Blue who is a 4lb mini aussie. It took her some time to warm up to him, he is very intimidating whether you are a dog or person, but the big boy is nothing but love and he and little Blue became fast friends and a game of tug of war began. One little tug, 2 little tugs and weeeee...