The term for an animal that is primarily active during sunrise and sunset is "crepuscular." Crepuscular animals benefit from the cooler temperatures and reduced competition for resources during dawn and dusk. This behavior also helps them avoid predators that are active during the day (diurnal) and night (nocturnal). Common crepuscular animals include deer, rabbits, and certain species of rodents, which tend to feed and engage in social activities during these twilight hours. Their adaptability to these specific times of day allows them to optimize foraging and increase their chances of survival in various habitats.