Hope it helps! I had to sensitize Jessie to the sound first (by c/t for listening, then reacting-looking at the sound) before I moved on to the alert behavior and then combining the sound with the alert behavior.
She is not a dog I would have picked as an actual hearing alert dog-too laid back but once she had the idea, it was amazing how quickly she generalized. I started training her to go bed for a knock on the door, but her first offered behavior was to alert me with a nudge on my leg! I am finding now she is more aware of specific trained sounds (and even verbal cues!) than she was before. Which, for her, is a good thing!
