First off, I haven't posted any recent pictures of Walter so here he is in his Halloween costume!
But the main concern is that Walter is starting to Pee in the house again.... He is trained and has been since about 12 weeks old (He's almost 6 months now). It was just recently that he started peeing inside and is very sneaky about it. I don't think this is marking, since it's a large amount of pee but it is generally in the same area. Any ideas?

But the main concern is that Walter is starting to Pee in the house again.... He is trained and has been since about 12 weeks old (He's almost 6 months now). It was just recently that he started peeing inside and is very sneaky about it. I don't think this is marking, since it's a large amount of pee but it is generally in the same area. Any ideas?