That's not true. If a dog is not fixed and you own him, you can breed him all you want papers or not. Registries have no authority over dog owners who are not members of the registry. -MIKE
Maybe that way in your area, but, here if you choose not to fix it they will come and claim it back as it would be part of an agreement to have it fixed. For as far as hunting goes I do not see where it will matter much.