Two people have been arrested after a baby girl was attacked by a dog believed to be an XL bully.Kent Police said officers were called to Siskin Close in Hawkinge, near Folkestone, at 2.23pm on Wednesday after a report the eight-month-old was bitten by a dog, believed to be the banned breed.Ambulance crews went to the scene and the infant was airlifted to a London hospital, where she remains in a serious condition, police said.