1. A pet robot-type of device with an autonomous emotion-based function, comprising: an environment detection device for detecting surroundings; an emotion-production module for producing an emotion based at least in part on data from the environment detection device; and a movement-determination module for determining a movement based on the emotion produced by the emotion-production module, wherein the movement determination module determines the movement so that actions expressing the emotion by movements of given parts of the electronic equipment are performed prior to main actions based on the emotion.