No video, no audio... just my description.

Let me preface this by saying that I live in a valley on the Kansas - Missouri line. Living in this valley produces all sorts of strange sound anomalies. For example I can hear the train when it's 10 miles away. Another example is we often see lightning fairly nearby, but it often produces no thunder. Somehow the rumble is deflected away due to the lay of the land. (I hope that makes sense)

My son (2yo) and I were in the back yard. He was jumping on his trampoline and I was nearby trimming the trees. Without warning, there was a sound in the air that I have NEVER HEARD BEFORE. It sounded as if a Giant Robot Dog had barked. Just once, VERY METALLIC type sound. My son stopped jumping and looked at me with a puzzled WTF look on his face. I shrugged my shoulders and said, "must be a race car". (He loves loud race cars).

The sound did not seem to have a direction, and it DID NOT BOTHER MY DOGS... (My dogs typically go apeshit when it thunders)

ANyone else hear this in the KC area?