Logan is a Rottie/Lab mix about 8-9 years old. He has always been very good about using the doggie door to hang out outside or to do his business. He has recently started peeing inside. I will not even know about the "accident" until Logan crouches on the floor when I wake up. The first time I thought he was paralyzed or something but quickly realized that he was cowering in shame.
I took him to the vet and his urine is fine. I don't think he is having trouble with the doggie door because he goes in and out all of the time. There is a possibility that he is jealous of my fiancee but Rick is only here a couple of nights a week and that has been the case for almost a year and this behavior is recent. I lost one of my other dogs about a month ago to kidney failure but Dedie was not one of Logan's buddies and he did not ever seem affected.

I don't think it is incontinence because he can go all night in a crate without an accident.
The vet referred to a medication that will help with behavioral urination problems. Does anyone know what it is or how it works?

Logan is a rescue and I have had him since he was about 3. He is a big sissy, gentle as can be, and never challenges my authority. If you look at him wrong he sinks to the ground. It is hard to imagine him having an "attitude problem" but I'm not sure what else can be going on.I know that 9 years is a pretty good lifespan for a larger dog and Logan has some other medical issues. He has about 30 tumors/cysts of various sizes that the vet doesn't think we should remove because of the trauma involved in that much surgery relative to the possibility of cancer, plus the fact that the cysts that have been removed have grown back. However, some of the cysts will cause him to yelp in pain when one of the other dogs bumps into him.

He gets huge enjoyment out of eating and still romps and plays about once a week, plus he loves to lay on his back in my lap and have his limbs stretched. I don't know if a diaper exists that is large enough for an 80-lb dog but I don't want to crate him at night when he is used to sleeping free, and very close to me.
I apologize for the disjointed post...I'm just at a loss and looking for direction. Thanks.
Logan is a Rottie/Lab mix about 8-9 years old. He has always been very good about using the doggie door ... and very close to me. I apologize for the disjointed post...I'm just at a loss and looking for direction. Thanks.

I wonder if his hips are bothering him, and it's uncomfortable for him to go in and out the dog door.
In any event, why not see if you can put his crate close to your bed, and crate him at night?
flick 100785
I'm going to ask questions, please don't take them as being confrontational.
Logan is a Rottie/Lab mix about 8-9 years old. He has always been very good about using the doggie door to hang out outside or to do his business.

Do you accompany him outside to ensure that he's doing his business? Or the health of his business? While 9 years old is a good age for a lab, it's past middle age for a Rottie.
He has recently started peeing inside. I will not even know about the "accident" until Logan crouches on the floor when I wake up. The first time I thought he was paralyzed or something but quickly realized that he was cowering in shame.

Dogs don't do shame. They are very quick, though, to pick up on our attitudes. For now, work with the knowledge that your dog can't not keep from peeing inside. It may be physical or it may be a new habit or it may be something else - for now, give him the benefit of the doubt.
Meanwhile, clean up with an enzyme cleaner like Natures Miracle.
I took him to the vet and his urine is fine. I don't think he is having trouble with the doggie door because he goes in and out all of the time.

Go out with him.
There is a possibility that he is jealous of my fiancee but Rick is only here a couple of nights a week and that has been the case for almost a year and this behavior is recent.

Dogs don't do jealous, at least not in a vindictive way. If Rick is peeing on the floor and Logan is over marking ...
I lost one of my other dogs about a month ago to kidney failure but Dedie was not one of ... seem affected. I don't think it is incontinence because he can go all night in a crate without an accident.

I'm sorry about Dedie. That Logan doesn't pee in his crate but does pee in your house doesn't rule out an infection - I'd get him retested with a pee sample from first thing in the morning.
The vet referred to a medication that will help with behavioral urination problems. Does anyone know what it is or how it works?

What is "behavioral urination"? Marking? When Logan pees inside, what is the volume? A squirt or two, or full relief? Or are you referring to leakage while he's asleep?
Logan is a rescue and I have had him since he was about 3. He is a big sissy, gentle ... It is hard to imagine him having an "attitude problem" but I'm not sure what else can be going on.

Why do you think he sinks to the ground?
I know that 9 years is a pretty good lifespan for a larger dog and Logan has some other medical ... I don't want to crate him at night when he is used to sleeping free, and very close to me.

Logan sounds like a special guy, and it sounds like you're doing a good job with him. First thing, though, for his peeing issue, is to totally rule out a bladder infection or to make sure it's not a result of his other health problems. A second veterinary opinion might be in order before resorting to drugs for "behavioral urination."
I apologize for the disjointed post...I'm just at a loss and looking for direction. Thanks.

Good luck with this special dog. Please report back.

Matt. Rocky's a Dog.