The two dogs involved in the attack that left three people injured in Christchurch's Bryndwr at the weekend, have been euthanised

A teenage boy was mauled without warning by two American Bulldog crosses at a Bevin Place property on Saturday.

His father was bitten on the neck while trying to protect his son - and is in a critical condition, while the teen's seriously injured.

The pair were visiting a friend when the dogs attacked.

Police have summonsed a 40-year-old woman under the Dog Control Act.