The family dog who fatally bit an 8-month-old baby in Brooklyn was euthanized yesterday. According to the city, the family had requested the dog be euthanized. On Thursday afternoon, the baby, Andrew Stein, was being watched by his grandmother in his parents' Kensington home. The 62-pound-dog Maccabee apparently bit the baby in the head when Andrew touched his paw. A police official told the NY Times that "infants are particularly vulnerable in such attacks because......