We brought home our Yorkie at 12 weeks, and it has taken 2 years to fully potty train him. We don't use potty pads, he only goes outside and when we are not home, and at night he is crated still.
The biggest problem we encountered, was his very stubborn personality. When he would get mad, or if he couldn't reach us he would mess on the floor.
__________________ Nikki  Charlie Bear & Hairy Harry |