Awhile back in one of the hunting dog magazines I read about a study the Canadian govt did on a wolf pack in the Northwest Territories.
For some reason they chemically fixed the pack. I can’t remember why they wanted to do that – but the end result was the wolf pack became more efficient killers over the length of the study. The evidence of that being the numbers of kills and health of the lower status pack members.
Relay this to domestic wolves – the dog should hunt the same and most like much better.
This is because he will take less frequent stops to mark territory and will be less interested in the other dogs when hunting in a group.
The change in a dog’s physical makeup will occur gradually over a 6-9 month time span. 95% of hunting dogs are better after being neutered for those two reasons.
I have seen a number of clients to the shooting preserve hunt their dogs for a season – take them to be fixed – then come back a season later and tell us how much better the dog is.