A local gardener was left with scratches after trying to stop a dog from attacking his face when the animal suddenly leapt at him.

Police Community Support Officer Paul Fletcher, of the Harpenden and rural neighbourhood team, said the service is trying to trace the black and white border collie.

The dog attacked the gardener who was outside, working at a Gustard Wood home in Wheathampstead between 11.50am and 12.10pm on Tuesday, June 17.

The gardener noticed the animal in the vicinity of the property, but as he had seen the dog on previous occasions, without incident, he had carried on working.

However the dog entered the garden, and its temperament suddenly changed. It leapt at the gardener, who was knocked off his feet.

PCSO Fletcher said: “The gardener had scratches on his arm where he tried to protect his face, but his injuries could have been a lot worse. We need to trace the owner of this dog and make sure he is not able to harm anyone else.”

The dog has a black face, white neck, and white patches on its body. It was not wearing a collar.

Anyone with information is asked to contact PCSO Fletcher on non-emergency number 101.