A 9-month-old baby was killed and a woman left seriously injured after a dog attack in Waterloo Thursday morning. Waterloo Police say the report of the dog attack was received around 7:20 AM. The incident happened in the 1200 block of Scott Avenue between Downing and Sager Street. Waterloo Police say that a 49-year-old woman, who was the child’s grandmother, was flown to the University of Iowa hospitals in Iowa City with serious injuries. The child was declared dead inside the home, where the attack happened. Police say the dog was picked up by animal control, and has since been put down.