Green’s Dictionary of Slang

(N.Z., mainly juv.) a derog. name for a Roman Catholic.

1962		P.A. Lawlor More Wellington Days 132: Protestants used to call the Catholic schoolchildren ‘Cattle Dogs’.
1973		W.J. McCarthy Listen...! 21: It was only natural that we ‘Cattledogs’ [from Marist Brothers School, Tasman Street, c.1916] were frequently ambushed by those ‘Proddyhoppers’ [from Mount Cook State School].
1988		McGill Dict. of Kiwi Sl.
1992		R. Park Fence around the Cuckoo 94: We children had a kind of good humoured rivalry, admittedly, often shouting, ‘Yah yah, Cattledog!’ or ‘Proddyhopper!’ as the case might be.
2003		McGill Reed Dict. of N.Z. Sl.