A Marked Difference in the Marking

So remember? We had Howie altered last week (he's doing much better, thanks for asking). It didn't occur to me then that the difference in my dog would be immediate and noticeable, but yesterday while we were walking I definitely saw a difference. He doesn't try to stop every 10 feet to mark the bush or mailbox or lamp post or neighbor's truck tire or... You get it, right? It's remarkable. Instead he has gone back to picking up all the rocks on the sidewalk and clacking them around on his teeth until I convince him to drop them. Sigh...