![A male red fox keeping watch near its den in the Colorado high country. (© Tony's Takes)](https://live.staticflickr.com/65535/49943536837_1918383bc9_k.jpg)
Such a serious fox and indeed, he had to be, as he was watching over his five kits in a somewhat public location. Here, he was on high alert as a person with a dog went by. We could tell him from his vixen by the “notch” in his right ear. It was likely a scar from a battle with some other creature in the past.