Killian howls when he hears sirens, LOUD! If we watch "Cops" on TV, he howls a lot!!!!! It is hilarious. He is excellent at it. Now, Shiloh, on the other hand, is a poor excuse for a howler. She tries like crazy to mimic Killi, but it ends up being a weak howl. yelp, screech combo. Whenever there is a siren, we are on the floor laughing!!!