I have a 8 to 10 year old rescue dog who has been with me for 3 months. About 2 1/2weeks ago she started peeing on the floor at night. We have ran a senior chem panel. Checked for diabetic, surgery to look for bladder stones or tumors. Nothing has been found.

Pat Lively

It really sounds like a medical problem to me. I would say keep working with your vet or maybe even get a second opinion.

Did it ever have any previous pelvic injury? I would definitely get another vet's opinion!

Pat, have you noticed any other changes in the dog since bringing him/her home? Usually there is a honeymoon period for rehoused dogs. They are very confused and watch you carefully to figure out what their pack rank is. The older they are, the harder the adjustment. After a couple of months they are usually feeling comfortable about their place in the home. I am wondering if the dog is challenging your leadership. Have you noticed any behavior changes? Has he/she become a bit more pushier with you? If not, and you are very comfortable with your being recognized as the leader, has the last potty run of the evening changed at all or is your dog drinking water during the evening hours? If so, start picking up the water dish and don't let the dog drink any water at least one hour prior to his/her last potty run. See if that has any effect.

If none of the above fits and everything is the same as before, I agree with both posters above. For a dog to suddenly develop this problem is not normal. I would continue to pester the vet or find another vet, to run additional tests.

I have a 8 to 10 year old rescue dog who has been with me for 3 months. About 2 1/2weeks ago she started peeing on the floor at night. We have ran a senior chem panel. checked for diabetic, surgery to look for bladder stones or tumors. Nothing has been found.

Pat Lively
I hed a husky she was my best friend as she got older shy still hed great pep ran all over the place. But then she started to make mistakes pee on the floor suddenly o r at night that's when we also realized my friend was senile there are meds for for your old friend ask you vet your old doggy will have to take them for the rest of his life.. and the peeing will stop.. and that's the truth my friend

In my original answer I made the serious mistake of not reading the question carefully enough and missed that you only had the dog 3 months. Rubypitbull has a lot more experience with rescue and rehomed dogs than I do. I am glad she posted where we really need her. You have a well bred puppy you want to get off to a good start, see my sticky. You have a rescue dog with a problem, listen to Ruby. I have found a good collection of ways to show you are top dog at Establishing and Keeping Alpha Position (http://www.dogbreedinfo.com./topdogrules.htm) Remember, top dogs aren't drill sergeants, but more of a old fashioned, strict, but loving parent.

I see many bad answers here where somebody failed to read the question. This is one case where I slipped up. I didn't rate Ruby because you can't rate the same person too often.

I want to thank you for giving the dog a good home. I hope between us and your vet, you find a solution. We have so many dogs needing homes, and so few good people like you.