I'm really sorry. Its horrible to lose a keet, and like everyone said try not to be upset at your dog.
But also, I'd just like to say sense no one else has.. please dont leave your bird out when you cant watch it, like when you go to sleep. Please dont do it with your new bird. Something else could have happened, even if your dog didnt get in the room.
Nov. 04 - Jul. 05
Your life was short lived but I hope you were very happy.