Redwood City man shoots and kills his own dog after...

A Redwood City man shot and killed his own dog when it attacked him on a walk Wednesday, police said.

The 76-year-old man was walking his dog, a large mastiff, in the 1300 block of Elmer Street in unincorporated Belmont when the dog turned and bit him in the lower leg. The attack continued, police said, until the man pulled out a handgun and fatally shot the dog.

The man was taken to the hospital for treatment but police said he is expected to recover. The gun was recovered and secured as evidence. Police said the man did not have a permit for a concealed weapon.

The dog’s body was taken into custody by the Peninsula Humane Society, which confirmed from the dog’s ID collar that it had previously been reported for bites.

Police said the owner is cooperating with the investigation and has not been arrested.

Anyone with information about this incident can contact police at (650) 363-4911.

Annie Ma is a San Francisco Chronicle staff writer. Email: ama@sfchronicle.com Twitter: @anniema15