More Visitors?

As I mentioned before, Duncan is taking his hole patrol duties very seriously. So seriously, in fact, that he found two more entrances into the yard. They were covered with leaves, and I wouldn’t have seen them if he hadn’t shown them to me (and before someone pops up with the idea that he dug them himself, these holes go into tunnels, and the exits for both tunnels are about 8 inches outside the fence). The holes are almost perfectly round, with no loose dirt inside the fence. Every time we go outside, Duncan does a sniff test on each hole. I can tell that whatever odor he smells is stronger occasionally, because he’ll really fixate on a hole for several minutes. I still don’t know why the animals would bother with these tunnels and holes, since the holes are the size of the spaces in the fence and the exit holes are even smaller. I’d think it’d be easier to just pop through the fence...