The present invention provides a display device for pets, which is fastened to the neck or the like of a pet, and is capable of providing various information on the pet without interfering with the movement of the pet. The main components of the present invention include: a housing member (10) having a space formed therein in which a plurality of electronic components can be installed, and having a predetermined length in one direction thereof； a display unit (20) installed on the housing member (10) to display various information； a switch module (30) capable of turning the power to the display unit (20) on and off, and changing the information displayed on the display unit (20)； a power supply module (40) that manages so as to charge a power supply from the outside and supply power to the plurality of electronic components installed inside the housing member； a sensor module (50) including one sensor or more for measuring the state of the pet； an animal information managing module (60) for receiving, storing, and managing information on the pet wearing the device； a navigation satellite receiving module (70) communicating at regular time intervals with a navigation satellite and receiving positional coordinate data； and a communication module (80) communicating with the outside and transmitting and receiving information displayed on the display unit (20).
