These animals are active during dawn and dusk, or twilight. Animals that are crepuscular are typically so due to the fact that many predators are not active during those times of the day. But as in the case of being diurnal or nocturnal, sometimes the organism is crepuscular in an effort to obtain food that might be present at these times. Mule deer, desert cottontails, coyotes, porcupines, and black-tailed jackrabbits, to name a few, fit into this category.
