Most of us on the forum of other animals that coexist with our birds. As has already been said, eternal vigilance is the key. Birds are extremely fragile, and it only takes one error to be fatal. I have four cats, and we haven't had any problems. Even after 4 years, I would never leave them together unattended (out together). The only thing that ever scared me was one time when one of the cats decided to jump into Timber's cage (the front door was open) to explore. Fortunately, I was in the room and Timber was out on his boing. I was able to grab Wilson and remove him before Timber got there, but he was moving at top speed to fight the intruder in his private space.