In the Northern Hemisphere, the winter season is well underway. Cold temperatures mean that species of all kinds must face many new challenges in order to survive the next few months. Spiders are no exception. One might assume that spiders die off once winter hits. While this is true for some species, it is not true for all spiders – many remain active in winter months. How do they manage this? Through a variety of physiological and behavioral adaptations. Behavioral adaptations include moving their homes to “overwintering sites” such as the “subnivean zone,” an area between the snow and the ground, or concealed locations in leaf litter or under bark, where it’s warmer. Spiders also have a physiological adaptation that helps them brave the cold months.