Texas brown tarantulas emerge from their burrows in South Texas due to their ability to sense changes in humidity that indicate impending rain. This behavior is driven by the opportunities that rain presents for hunting as it increases prey activity. The softened ground after rainfall also makes it easier for the tarantulas to move. Rain events are critical for the survival of tarantulas and other species, allowing them to thrive during a respite from the area's dry climate. Ultimately, the tarantulas embrace the rain, capitalizing on the conditions it brings to their environment.