A video of a man attacking a kangaroo in order to save his trapped dog has captured the attention millions of viewers, just a day after it was posted online.

The video, posted to the Facebook account of Louisiana man Steven Stubenrauch, appears to have been filmed from the back of a ute as it drives through arid scrubland.

The ute draws to a halt and a man can then be seen leaping from the back, racing over to help a dog, trapped in a waiting kangaroo’s headlock.

At his approach, the roo releases the dog then stands tall, prepared to do battle.

The man and the marsupial square off, with the man landing the first blow: a right hook square to his opponent’s face.

The roo seems a little stunned by the attack and soon turns tail, racing away into the scrub.

My Stubenrauch explains that a “buddy from Australia” sent him the video, however the exact source is not known

The presence of running commentary by a man with an Australian accent throughout suggests it may have been an excerpt from a television program.