My 18month old male pug keeps cocking his leg up Walls in our home. Even after going outside he will save a little for indoors. He appeared to be housetrained until 2-3months ago. He lives with 4 other dogs, castration is not an option as we want to stud him. I could crate him again but wondered if it is likely to continue due to his being "mature" now? I do clean up his deposits thoroughly, but as it happens 2 or 3 times every day I am running out of patience and feeling frustrated by this new and horrible habit! Any advice on how to tackle this would be great - as would explanations why it may be happening and how to solve the problem for good! Thanks!