We raised german short hairs. Some like to fight, some like to kill.

Mixing dogs from different packs can and always will be a problem. We had a dog that would kill another dog within a couple of minutes...we sold him for $5000 in 1969.

We had dogs that would hunt long, and dogs that hunted short. Same sex Dogs from different people were rarely if ever mixed other than young dogs that were learning. Time in the truck talking about which dogs had agressive attitudes solved a lot of problems. Guys that like to see dog fights...well....you can pick up on this trait real quick....BEWARE!!!

We would hunt dogs from different guys by alternating them from morning and after noon hunting.