I have two 7-year-old Westies, 1 male, 1 female, littermates, who have been housetrained since 6 months. They have full run of the house 24/7 and a doggie door that they use all the time to go into the yard whenever they want. Suddently last month my male started peeing during the night, usually right in front of their crate, but he has found a few other places too. It doesn't happen every night, but has been at least a dozen times in the last 2 months; sometimes it was raining, but not every time. I tried pushing his nose in it and scolding, just gently scolding, not scolding at all, and anything else I could think of. I took him to the vet who examined him and did a urinalysis and said there is nothing physically wrong. Nothing has changed in our routines or environment. Anybody have any ideas what is causing this or how we can stop it?