We walked to our red bridge park today, the kids and Spud and I. As we walked there, Spud peed on one of his standard bushes. Not noteworthy on its own, but as we walked back home, Spud stopped to check on this particular bush. Tate said, "He's smelling his own pee!" Smith said, "I think it's like Facebook - Spud is seeing if anyone left a comment." Then he elaborated - another dog sniffing would be a "like" and another dog adding his scent would be a comment. As we went along, Spud added some of his scent to another dog's area - the dog was just in front of us. Smith said, "Spud just left a comment!"