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Appetitive Behavior: Animal searching behavior. The variable introductory phase of an instinctive behavior pattern or sequence, e.g., looking for food, or sequential courtship patterns prior to mating.Consummatory Behavior: An act which constitutes the termination of a given instinctive behavior pattern or sequence.Appetite: Natural recurring desire for food. Alterations may be induced by APPETITE DEPRESSANTS or APPETITE STIMULANTS.Feeding Behavior: Behavioral responses or sequences associated with eating including modes of feeding, rhythmic patterns of eating, and time intervals.Behavior, Animal: The observable response an animal makes to any situation.Conditioning, Operant: Learning situations in which the sequence responses of the subject are instrumental in producing reinforcement. When the correct response occurs, which involves the selection from among a repertoire of responses, the subject is immediately reinforced.Conditioning, Classical: Learning that takes place when a conditioned stimulus is paired with an unconditioned stimulus.Avoidance Learning: A response to a cue that is instrumental in avoiding a noxious experience.Reinforcement (Psychology): The strengthening of a conditioned response.Mushroom Bodies: Prominent lobed neuropils found in ANNELIDA and all ARTHROPODS except crustaceans. They are thought to be involved in olfactory learning and memory.Reward: An object or a situation that can serve to reinforce a response, to satisfy a motive, or to afford pleasure.Association Learning: The principle that items experienced together enter into a connection, so that one tends to reinstate the other.Behavior: The observable response of a man or animal to a situation.Social Behavior: Any behavior caused by or affecting another individual, usually of the same species.Sexual Behavior, Animal: Sexual activities of animals.Conditioning (Psychology): A general term referring to the learning of some particular response.Health Behavior: Behaviors expressed by individuals to protect, maintain or promote their health status. For example, proper diet, and appropriate exercise are activities perceived to influence health status. Life style is closely associated with health behavior and factors influencing life style are socioeconomic, educational, and cultural.Motivation: Those factors which cause an organism to behave or act in either a goal-seeking or satisfying manner. They may be influenced by physiological drives or by external stimuli.Odors: The volatile portions of substances perceptible by the sense of smell. (Grant & Hackh's Chemical Dictionary, 5th ed)Sucrose: A nonreducing disaccharide composed of GLUCOSE and FRUCTOSE linked via their anomeric carbons. It is obtained commercially from SUGARCANE, sugar beet (BETA VULGARIS), and other plants and used extensively as a food and a sweetener.Appetite Regulation: Physiologic mechanisms which regulate or control the appetite and food intake.Cues: Signals for an action; that specific portion of a perceptual field or pattern of stimuli to which a subject has learned to respond.Smell: The ability to detect scents or odors, such as the function of OLFACTORY RECEPTOR NEURONS.