Words I really do not understand: “#Housebroken” and “#Fixed.”

Fixed?  I don't feel "fixed."

      When a dog is housebroken, he is actually fixed of the desire to go to the bathroom indoors.  Shouldn’t that be called “housefixed”?  Or “housetrained”?  Or even “CCC,” meaning Canine Crapper Control?

       When a dog is “fixed,” he is actually broken because he can no longer father or mother puppies.  Wouldn’t the better word be “broken,” or “snipped”, or “tubal terrification”?

      "If you pick up a starving dog and make him prosperous, he will not bite you; that is the principle difference between a dog and a man." - Mark Twain