Empathy toward a robot is increased by the robot emulating human-like or animal-like behavior. A robot includes a movement determining unit that determines a direction of movement, a drive mechanism that executes a specified movement, and a familiarity managing unit that updates familiarity with respect to a moving object. The robot moves away from a user with low familiarity, and approaches a user with high familiarity. Familiarity changes in accordance with a depth of involvement between a user and the robot.