Bronco was not only big, he was also confident and unafraid and insensitive to noise. Most dogs I’ve known have been afraid of lightning and thunder and loud explosions, but not Bronco. Here in Texas, thunderstorms can be very violent and dangerous. North Texas is located in Tornado Alley, and that’s where the world’s worst thunderstorms occur. We’ve had our share of lightning strikes, heavy rain, flooded streets, sixty-mile-an-hour winds, giant hail, and tornadoes. You don’t want to be outside when a severe thunderstorm is at hand.
Once when I was out walking Bronco, we were surprised by one of those Tornado Alley–style supercell thunderstorms, and lightning struck the ground maybe one hundred yards away from us. It was bright, but above all the following thunderclap was very loud. It was an explosion more than anything else. I jumped where I stood, and my heart was pounding afterward. Bronco, on the other hand, was too busy sniffing something interesting to pay attention to the sound. After the lightning strike, he looked up as if to make sure everything was okay, then he continued with his important olfactory project. I can assure you that he was not deaf. My repeated failure to quietly open a cheese wrapper in the kitchen without his noticing is proof of that.
I should add that Leonbergers are known to be confident and unafraid. It is part of the breed standard and they are bred that way.