It depends more on what you really want to do with them. The breed is important but some can be taught to do amazing things if worked with.
Willow is a puppy we rescued from the pound. She is part Lab/part Blue Heeler. Since she had been in two different pounds, her time was up. The saddest puppy I had ever seen. She didn't know how to interact with humans or other dogs, not even how to play really.
Today she is four. The best guard dog I've ever had. The alarm goes off when someone is around, when she barks, I pay attention. She runs the parameter of the yard and barks at birds, planes and whatever comes inside her area. Her breed makes her an excellent herder. All her stuffed animals must be in a circle, she does the same with insects on the patio.
She is now learning to keep the chickens near the coop without hurting them or scaring them. We live on 21 acres and she protects her family with all her might, even the girls when they free range.
She and Sampson tree squirrels, run the same paths as the deers take to the pond, flush out rabbits and most of all keep the coyotes away from the chicken coop. They are house broken and come in part of the day and sleep inside at night. They also love a car ride too. They follow and know 50 different words/commands.
So I really believe you can teach them a lot and the love you give them means a lot too.
BTW....I am a proud DOG/CHICKEN mom lol
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