What makes me mad about dog owners who have HUGE dogs and walk them on a leash is that they let their dogs "do their business" on other people's lawns and don't clean it up.    
 
I have just had the misfortune of mowing my lawn where it appears that on a certain section a whole herd of "large elephants" must have been housed unbeknownst to me because it was awful!  Right by my mailbox where I have to stand to get my mail is another favorite place for these "large elephants".  I have yet to see any large dogs running around off a leash in my area, so I know the owner's have to be allowing this.
 
People, for goodness sake, be a conscientious and considerate neighbor and carry a Pooper Scooper and plastic bag with you when you walk these elephants!  I shouldn't have to clean up after your animal, and I shouldn't have to hose down my mower because I didn't see your animal's "business" in time!
 
I'm an animal lover and have a very small dog who is allowed out on a leash in my own backyard, and I clean up after it!

Wouldn't  it be GREAT if moth balls worked at stop signs!!!!!!