Potty training stinks

Our precious dog Mack came to us from the shelter. He brought with him MANY issues. One of them would be his lack of being able to tell us when he needs to go to the bathroom. If we don't take him out on a schedule he'll just go find a nice piece of carpet and turn it into his urinal. Well I guess he's been proud of himself this week because he found the ultimate urinal. Last night while Mark and I were getting ready for bed we discovered Mack found the potty and must have figured out how to use it. Most days he likes to spy on us while we are using said potty. But he must have been observing and plotting. Because last night while Mark was getting out of the shower he noticed it. Mack has been hiking his leg on our toilet!!! Yes that's right there was dried pee all over the base and the rug was definitely soaked with pee and from the looks of the mess he had done this more than once. So while I was spraying down the toilet last night it occured to me 'My gosh my dog is smart, he knows what a toilet is for!'