I have a nearly 13Yr old terrier & a 10 mth old labrador. Pup is fine with toileting etc, but older dog is fine all day, but then after dinner is in and out of the back garden, when he either digs at a rat hole, plays with the pup or pees.
He can be outside for ages but then comes in and as soon as our backs are turned he pees on the floor. He's recently had all the tests in the book and has comeback all clear.
Is he just a bit senile & we just have to put up with it?