A robot R includes a pair of crawler devices 2 supported by a body 1. Each of the crawler devices 2 includes a crawler unit 3 supported by the body 1 such that the crawler unit 3 is rotatable about a first rotational axis L. The crawler unit 3 includes a support 10 extending along the first rotational axis L1 and a pair of crawler parts 20A, 20B mounted on the support 10. Each of the crawler device 2 includes a rolling driving member 46 connected to the support 10 of the crawler unit 3, a rolling motor 60 that rotationally drives the rolling driving member 46, a crawler drive shaft 41 extending along the first rotational axis L1 through a gap between the pair of crawler parts 20A, 20B, a crawler motor 50 that rotationally drives the crawler drive shaft 41 and a torque transmitting mechanism 42 that transmits rotary torque of the crawler drive shaft 41 to the pair of crawler parts 20A, 20B, The crawler motor 50, as well as the rolling motor 60, is disposed outside of the crawler unit 3.