The dog pictured in this photo was reportedly the canine that attacked the boy

A young boy was left screaming and bleeding profusely after he was bitten on the face by a dog roaming around a playground.

Witnesses told Perth News an unleashed brown dog was seen prowling around Mills Park, in south east Perth, on Saturday.

They said they asked the owner to leash the medium-sized dog, but claimed he refused.

The dog is believed to have been at the park for about 15 minutes before it attacked the child.

Scroll down for video

The victim was screaming and had blood pouring down his face following the attack, witnesses said.

'The boy was bleeding a lot. He was bitten close to his eye,' one eye witness said.

'It was scary. All the kids were crying.'

Police and rangers attended the scene, but witnesses believe the dog had not been seized.

Ambulance lifted the boy to Perth Children's Hospital where he was in a stable condition.