PROBLEM TO BE SOLVED: To provide an attaching device for animal for knowing the amount of exercise of a pet and an owner and capable of being used for health management by knowing the amount of exercise of the pet and the owner and the transition.SOLUTION: An attaching device for animal includes: a connecting part 2-1 to connect to a lead for leashing an animal； a calculation part 2-5 which is connected to the connecting part 2-1 through an interface for calculating and controlling； a step sensor part 2-6 which is connected to the calculation part 2-5 for counting steps； a transmitting and receiving part 2-8 which is connected to the calculation part 2-5 for transmitting and receiving radio waves to and from a handle with a lead； a display part 2-2 for disclosing information based on the control by the calculation part 2-5； and a power source 2-3 for supplying electric power to each of the parts.SELECTED DRAWING: Figure 2
