Hi! This is my first post on this forum. I'm the happy owner of a very kind and intelligent 6 months old Sheltie puppy. He's an easy learner in general (we got him 4 months ago), but we do have issues finding the right way to make him stop (or at least reduce) his barking at cars while he's inside. He spends lots of time in front of our front window and, well, he barks at the cars that are passing on the street (mostly in the morning and before diner, when people are going to/coming back from work). Considering the fact that Shelties are herders, I guess it's instinct that makes him bark at fast moving objects, but how do I stop him or get him to relax a bit? I tried turning his attention from the cars by playing with him, but he doesn't get fooled that easily (he get's back to "work" watching out for those fast moving cars). I tried giving him treats when he didn't bark, but got limited results. I also tried closing the curtains and, well it helped but he still sees the cars through them (and hear's them). I tried calming him down, speaking to him softly, but I don't want him to associate his barking to getting my attention either. So, does anyone have any suggestion that would help?