An exercise monitoring pedometer for pets is directed toward measuring a pet's exercise over some, period of time, such as a day or week or month. The pet pedometer includes a solid state three-axis accelerometer, a signal processing unit, a CPU, a memory chip and a display with settable controls, and may include a voice recorder/player; or these functions may reside mainly on an application specific integrated circuit. The settable controls are directed toward providing a setting for pet stride size for conversion for walking and running, and for manual resetting. The pet pedometer auto-selects automatically for a pet's stride both a walking stride and a running stride. The present invention may also contain a recorder, typically a solid state recorder, which provide for a recording of the pet "owner's" voice, or selected music, so that the owner may record encouragement, etc., to his/her pet.