Kobe is my second Yorkie & He's 4 yrs old. He loves getting wet and dirty (he's a cow dog) & always goes to the door when he has to go-but he marks everything-still. And he has taken up pooping on the living room carpet, just for the heck of it.
I know when I see him walking into the tv room & he has his head down-there will be a mess to clean up.
He knows what he is doing and it drives me nuts.
My first Yorkie would not go out if the weather was not to his liking, lol. If it looked like it would rain-he would pee inside the doggie door & poop in front of the toilet.
I swear, Yorkies are the smartest of dogs & they just do it cause they can.
I gets frustrating though....