My 2 year old boxer has started urinating in the house. This started a few days ago in the middle of the night, he stood up on his bed and immediately started urinating. He has been drinking more than usual lately so I figured it was an accident. Very early this morning (around 4 am) he did the same thing....this time his bed was a little wet as well. In the morning he sat on my husband's lap and started urinating again. We also noticed that he was shaking a bit when he was laying on his bad. It started with just his head bobbling but then we noticed his front legs were shaking. We took him in to the vet right away. We were at the vet's for almost 3 hours today running tests. All were negative (diabetes, kidney issues, UTI, etc). The vet prescribed phenylpropanolamine and sent us home. Within 3 minutes of being home it happened again...and it is not a little dribble, it's a lot of urine. This is very abnormal for him. He knows that if he whines at the door we will wake up and take him out. It's almost as if he has no idea it's coming. He also sulks after it happens. We feel terrible. Has anyone had/heard of this happening before?? Any tips or suggestions for the incontinence? Our only solution today has been taking him out every few hours.