A "something" on which to blame farts.
Rather than accept blame for farting(noisily), one exclaims that they had witnessed a creature in close proximity by invoking it's name and looking behind.
A parking lot that is made unpleasant because of the sound of barking dogs left in cars.
"I can't stand the noise in this barking lot! Let's load our bags in the car and get out of here!" Or -- "Listen to that noise! What do those dogs think this is -- a barking lot???"