I discovered a fox den near by my house last Spring quite by accident. I was just driving by and there they were, two little kits along with their mama. I then had to figure out how to photograph them. One early evening they were out so I rushed home, grabbed my camera, and rushed back - hoping they were still there. They were! I sat a few feet from a busy road, aiming through a barbed wire fence, getting eaten up by mosquitos, clicking away until I lost my light. It's always a thrill to sit in the presence of wildlife.
Great encounter and you did a great job capturing these little guys :)