Definition: Cheeful is a term used in the context of animals, particularly in relation to their behavior and characteristics. It describes an animal's state of being "cheery," or cheerful, with a positive attitude and energy. In general terms, cheeful refers to someone who has a good mood, a lively disposition, and a zest for life. Cheeful animals are often characterized by their joyful disposition and love for social interaction, as well as their ability to exhibit certain behaviors that are associated with being che