A donkey, a cow and a pony walk into a bar in Australia.

No, this isn't the start of a joke, it happened at a hotel in the Northern Territory, according to local police.

The Northern Territory Police, Fire and Emergency Services Facebook page said officers were called to the Humpty Doo Hotel, located around 40km north of Darwin, at around 2.45am on Tuesday morning following a call from the proprietor.

"She was concerned about a small donkey, pony and cow that were in the hotal area and running onto the Arnhem Highway," the post read.