I was playing a round with one of my friends at Seymour Butts (Seymour Lake Park) in Oxford, MI. We came to hole #10 and I was setting up my putt for par, which I proceeded to miss. All of the sudden, this individual with a dog starts walking up to us. Of course, the dog isn't on a leash, which is illegal. So, the dog runs up to my friend and attempts to rip his disc out of his hand. Luckily, my friend moved before the dog chewed it. So, I proceeded to ignore my putter which was laying helplessly near the basket. To my dismay, the dog trots up to it and picks it up with his teeth! The owner proceeds to say that his dog loves frisbees, and that he can't throw them for her because of his terrible arthritis (yeah right). Then, I specifically tell him that I don't want him to rip the disc out of the dog's mouth. Of course, he proceeds to tear my perfectly beat in DX aviar from his stupid dogs mouth. He then gave it back to me, chewed, without saying he was sorry in any way. The dog continued to jump after the disc while i held it and also nipped me on the leg with its teeth. Later that day, we saw the same guy on the course with his dog. I proceeded to warn everyone not to throw. Also, I saw them roaming the course a week later. I was puzzled as to why he would take a dog, unleashed, to a DG course if the dog loves to catch and chew up frisbees.