if your looken a good nights lamping you will need somthing thats going to last a good night,for talk sake a 3/4 greyhound 1/4 collie are known to blow up you dont want to be carrying an oxygen tank around with you all night.The dog im lamping at the moment is saluki x irish terrer she is of one of the best hunting strains in Ireland she is retired from hares at 6 (she well still deck a hare) and she will kill you 20 to 30 rabbits in a good a night no problem.