Johnston police said a 2-year-old boy was attacked and bitten in the face by his family’s pit bull, which is now under a 15-day quarantine while officials decide its fate. Police said the dog attacked the boy Tuesday at a home on Anita Road, after the child pulled on a blanket the dog was lying on. The boy suffered puncture wounds to his cheek and nose and scratches on his face. He was treated at Hasbro Children’s Hospital for injuries that were not life-threatening. The dog is being held at the North Providence Animal Shelter.