The short-tailed weasel (Mustela erminea) is Colorado’s smallest native carnivore.  In summer, this diminutive weasel sports a chocolate brown coat with a light underbelly.  In winter, it transforms to pure white except for a black tipped tail. In this white phase, the short-tailed weasel is often referred to as an ermine. I have now photographed 56 species of the 70 species in my Colorado Mammals Project.  Of the 14 species that remain, ten are… Read More