We've been brooding our chicks in the house so they end up living as part of the family until they're ready to go out to the coop. The benefit of that is that the chicks become quite friendly, both with us and with our other pets. I think this early bonding helps the dogs and cats get used to living closely with chickens, so they no longer see them as prey, even after they move out to the yard. As the chicks grow into adult chickens, they do tend to get a bit more "wild" but with regular attention, I think many still retain a deeper trust and remember the love and companionship they used to enjoy indoors with us. I have found that the cockerals tend to start out more outgoing and inquisitive than pullets, but they also can become suspicious or aggressive as they mature. Therefore, it's important to keep handling them so they continue to see you as a dominant member of the flock.