Callbacks to the 9th Series

 20 dogs were called back:  2, 4, 6, 13, 14, 18, 23, 27, 30, 32, 34, 35, 37, 40, 43, 45, 46, 49, 50 and 51

2 dogs dropped: 5 and 28

Dog #18 will start the 9th series.