My family had a kelpie x (kelpie heeler) farm dog bitsa off my cousin's farm. Was exactly like your dog, BadWolf. S
She actually learned to leave the room *before* she farted... tho not quite as smart as our old bull terrier cross - who would leave the room if it was his fart, but not if it was someone else's fart. Tho he always waited for someone to complain before he'd think about leaving.
Only one thing wrong with the kelpie heeler mix dog - she was scared of sheep.
Best trick - was climbing trees - about 3m straight up into the fork. Scared the crap out of people at night time. Panther escaped from zoo.