Exorcising Dogs or Poor Spelling?

When people misspell words it can be as funny as it is sad. The misspelled word makes you think of the paranormal, so I thought I would share this!
 You would think that the people who make signs would have a better grasp on the language. Unfortunately, some don't and that was evidenced by this sign in a park... telling people not to "Exorcise" their dogs in a certain location.
  "Exorcising" means to drive demons or ghosts out of a living being.
  "Exercising" means to move your body to improve physical fitness.
  For those who think their dog needs to be exorcised, perhaps the dog needs obedience training. Or maybe you are craving a Drake's bakery Devil Dog pastry!