My brother taunts Sophie with the push mower when it's off and she goes nuts but if it's on, she won't bother it. She'll leave it alone for a while then run back, tell it who's boss, and trot away, ha! I think it's funny. ha
I have to stop Molly from chasing the lawn mower and barking her head off at it, but only when it is running, I also found out she doesn't care for the weed eater. The sweeper also turns her into a lunatic. Rocky could care less, he just runs away.