Night-loving is a term used to describe individuals who prefer to stay awake and active at night. Other words that can be used to express the same meaning include nocturnal, night owl, and night crawler. Nocturnal is a scientific term used to describe animals that are active at night, whereas night owl refers to a person who enjoys staying up late into the night. Night crawler is a slang term that describes someone who loves to be out late, whether at a party or wandering the streets. Other related words include insomniac, night shift worker, and night-time enthusiast - all of which describe people who prefer to be active during the night hours.