We have Boston Terriers our male Winston is fine with them he's actually kinda afraid of the rooster but tries to lick him anyway course he's been raised w/ chicks/chickens/ducks his whole life. Patty is fine w/ them just jealous of all the table scraps they get and she doesn't and sits outside the run trying to get the scraps through the fence and when the chicken steals them she growls and barks and tries to bite them through the fence but not because she wants the chickens.