As the seasons change and the days get shorter, we humans begin to prepare for colder temperatures by bundling up in jackets and scarves. However, for wolves, adapting to the changing seasons is a bit different. They have their own built-in adaptation: a thick undercoat of fur. A wolf's coat consists of two layers: the long, protective guard hairs that form the visible outer … [Read more...] about Wolves’ Built-In Adaptation: Their Insulating Undercoat