I also agree, Yorkies are never too old to learn. It's unbelievable how smart they really are!
Scottie was 5 months old when I got him and was 6 months by the time I actually started training him. It always sounds easy, reading the step-by-step guides to teach simple commands. And then when you go to do it, it's a lot harder
Scottie also refused to sit when I first taught him. In fact, I never saw him relax in a sit or lie down in the resting state. He was always on all fours! hahaha...
Anyway, I tried the lure and all the other suggestions to no avail (i.e. with the treat really close to his nose and moving it backwards; he'd just step backwards). Finally, I had to slightly push him bum down, click, and treat in order to train him to sit. Once he 'got it', it was easy from there.
It's kind of cute when they're trying to figure out what you're trying to get them to do. Haha..and then it can become frustrating when you lose patience, which you should then try again later. Training should always be fun!
