While New Zealanders have become hardened to the sight of flat hedgehogs and opossums on the roads, it is less common to see a bowled wallaby. This can be taken as an indication of numbers, perhaps: over fifty times as many hedgehogs are killed on New Zealand roads as on similar roads in Great Britain, so it can be assumed that we have fifty times as many hedgehogs as they do. However the wallaby, while seen less frequently, is nevertheless a noxious animal, and has turned out to be a most unpopular importation.