And if you're interested in what Cesar Millan has to say about this, check out his blog post, "Cesar's Thoughts on Dog Navigation". Apparently, the dogs in his neighborhood in Mexico would also ride the busses to drop him off at school and would then take another bus back home. Amazing!
And while I'm on the subject of Cesar Millan, I also came across a hilarious video clip on his website of some highlights from when South Park did a show on him in . You have to watch this: