This is the moment a loyal dog saves his owner from a vicious biker mugging during their evening walk in Brazil.

Security camera footage obtained by Newsflash shows how the bikers target their intended victim as they ride past him and his black and white pooch in the city of San Andre in the Metropolitan Region of Sao Paulo, southeastern Brazil.

As the pair turn back and pull up beside him, the pillion passenger jumps off and confronts the dog walker, not named in local media.

But as he tries to stick his hand in the man’s jacket pocket, the dog leaps up and snaps its jaws, trying to sink its teeth into the crook’s arm.

Terrified, the thief jumps back on the motorcycle and flees the aborted robbery on 19th October as the footage runs out.

Social media users were amazed by the footage.

One named ‘Denilde Carvalho’ commented: “God bless our hero dogs.”

‘Marta Reis’ added: “Even though I’m afraid of dogs, I admire them, that’s when we see their loyalty! Congratulations!”

‘Leia Sousa’ admitted: “I want a dog like that.”

‘Elisangela Paulino’ said: “That’s why I love these four-legged animals. If humans were like them, our world would be much better.”

And ‘Maria Gomes’ concluded: “This dog is the best.”

Street crime rates are high in Brazil, especially in the cities and metropolitan areas.

There has been no information on whether police in Sao Paulo State are investigating the botched robbery.