This is the hilarious moment an impatient pet dog started beeping a car horn after the owner took too long paying for petrol.

The adorable pet pugs - both wearing matching t-shirts - were left inside the blue saloon in Nonthaburi, central Thailand, on Saturday (September 21).

When the driver took too long to return, one of the dogs scampered onto the driver's seat and began repeatedly honking the horn with his paws.

Fellow motorist Channarong Mahun was filling up his own car when he saw two dogs beside him.

Channarong revealed that the owner had been gone from the car for more than two minutes when the dogs started beeping.

He said: "I saw the owner go inside the kiosk to pay for the gas. Then he headed back out and went to the toilet.

''The dogs must have been very impatient. He had been gone for about two or three minutes and when they saw he wasn't coming back quickly and one of them starting pushing the horn.''