An information processing system includes: a state determiner that determinesastate of an animal using a captured image of the animal; a feeling determinerthatdetermines a feeling of the animal corresponding to the state of the animaldetermined bythe state determiner, on the basis of a notification wording DB indicating arelationshipbetween the state and the feeling of the animal; and a notification processorthat notifiesuser terminal 4 of a wording indicating the feeling of the animal determinedby the feelingdeterminer.