One of our neighbors has two akita mix dogs.When we first moved in these doggs would appear on our property. At that time we did not know who they belonged to. Our old rottie would play with them (he's kind of to old to really play, but it's what passes for play with him). Everything was fine until one day about the fifth time they had gotten out of their fenced yard and came visiting, they both attacked our Rottie! He had not ever been in a fight before, he just wants to play with all dogs.I had just broken my ankle badly and was not supposed to be up on it. I mangaged to scare them off by screaming at them. He had one on his back and one one his head. Luckily the didn't tear him up too bad, his ear was messed up and he had a few gashes and a bad puncture on his side. The owner was very nice, he came right over to see if he was okay and to offer to pay for any vet bills. My DH told him that the dogs had been fine as long as they had just been visiting but once they attacked that was it, if we saw them on our property again, to protect our dogs and our DGD we would shoot them. For the next three months he had workers at his house every day reinforcing his fence and building a better run that they could not escape from. they have not gotten out since.
Monica