Callbacks To The 6th Series

There are 39 dogs callback to the 5th series and they are 1, 5, 8, 19, 22, 23, 24, 25, 33, 39, 43, 49, 50, 52, 53, 56, 61, 62, 69, 71, 75, 80, 82, 85, 86, 89, 94, 98, 100, 104, 106, 111, 112, 116, 117, 122, 125, 136, 137

27 dogs were dropped and they are

2, 7, 13, 14, 16, 21, 27, 30, 31, 35, 36, 41, 47, 55, 58, 59, 63, 64, 65, 74, 88, 96, 103, 105, 119, 129, 130