Snake fungal disease, SFD, is widespread in snake populations across eastern North America. SFD causes skin lesions and often leads to death. We hypothesize increased stress and stress reactivity in timber rattlesnakes makes them more susceptible to SFD and makes it harder for snakes to fight off the disease. We will tag and track 20 timber rattlesnakes to test this hypothesis. We will also use these data to see how SFD influences snake habitat selection and movement patterns.