Toddler killed in dog attack at grandmother's house A toddler has died after being attacked by a dog in the state's south west, police say. The two-year-old boy was at his grandmother's house in the Riverina town of Deniliquin when he was attacked by a mastiff cross about 2.30pm on Sunday. It is believed that the boy had gone outside to get an ice cream from a back fridge when he was attacked by the dog, which followed him back inside. Police said the boy's grandmother had intervened but had been unable to force the dog to release the child. The boy's mother arrived at the Victoria Street house during the attack, and managed to fight the dog off. ""She's just arrived midway through and found this happening,"" a police spokeswoman said. The critically injured boy died shortly after he was taken to Deniliquin Hospital. "He had sustained severe head injuries," the spokeswoman said. His 70-year-old grandmother was also taken by ambulance to hospital where she was treated for exhaustion, bruising and abrasions. Council rangers seized the dog, which police said was owned by a family member who lived at the house. It was destroyed overnight. Deniliquin detectives are preparing a report for the NSW Coroner.