BROOKLYN PARK, Minn. — A 3-year-old Minnesota boy is not expected to survive an attack by two pit bulls last week, his family said. The family of Covil Allen was at a house in this northwest Minneapolis suburb to buy a dog when the attack occurred. The police report says adults tried to beat back the dogs off Covil with hammers and pick axes, but it was a struggle. Covil’s mother too was bitten, on a leg, and has had several surgeries. Covil has undergne several surgeries. When police arrived, they shot one dog dead and wounded the other, which was taken to a veterinarian and euthanized. The attack was July 19.