I have a Rhodesian Ridgeback mix and she is 2.5 years old. I've been meaning to get into a forum and ask this question for some time, and am just getting around to it now. Abbey makes different sounds for different animals that she sees. When she sees a dog outside she barks loudly, but slowly. When she sees a cat outside she makes whining sounds, almost like she is pouting. When she sees a raccoon or fox she will add growling to a more aggressive bark. When she sees a human she does not know she barks, but if she recognizes the person(neighbor) she makes a whisper type of bark. When she sees a squirrel she makes no sound at all. She simply watches, or will chase one until it runs up a tree. Do your dogs make similar sounds to these? Why does she seemingly make a different sound for everything she sees? Is it a way to inform me as to what she is seeing, or is there another reason?