Usually Brutus is such a sweetheart.( sorry this is long.) He had been so good the day before with the grandbaby and yesterday morning absolute sweetheart. So I decided to take him out to the pond for an early swim. Ok, we were fine. Stayed out with him a while and we came back in the house. One hour later he wants out. Take him out to go potty and then he rufuses to come back in the house. Tried a toy, cookie to no avail. Picked him and carried him in the house. He then starts racing through the house looks and me and my husband and pees on the floor. Put him back outside. Sat out with him. He decides he is going to the pond. I decide he is not. Went after him and made him sit. he was not happy. Brought him back to the house area. He then pulls the volley ball net off the pool and is running with it. I took it away and put it up. Put him back in the house. Once again running romping and stomping. Looks at us and pees again. Put him out again, stayed out but ingnored him. Finally he calmed down and i did play tug of war, and after a while did take him to the pond. Went to come in the house again, He refuses again. Went to pick him up, he lays on his back gets a wild look in his eye, growls at me and is trying to chew on my wrist, hard. By this time I am tired, sweaty and disgusted. Reached around and grabbed the scruf of his neck and shook it and told him no. Carried him in again. Again he comes in and pees. Took him out again. I was losing the battle no matter what. Stayed out with him. Let him play by himself. Any Ideas if this happens again?