Hope I don't jinx this. He is really doing well with potty training. He goes too the door. I think I had the most disinfected kitchen floor in the USA so he gave up and goes out. At 4 months old he is doing great. Yes he is a herding breed, and this little guy can out run anything. Buck was 4.9 lbs when I brought him home and is now at 13. As a mini he is only suppose to go 20 lbs and 12 inches tall. He acts like a 70lb. dog. He rammed me in the back of the leg and tossed me to the ground. Having fun with this little guy, I miss my Lucky and Lil' Lady, wishing they would be here with Buck. Lucky would have loved Buck. Lil' Lady would not have, LOL.