Despite close collaboration existing between humans and working dogs, there are few options for reliable two-way communication between them. The main goal of the FIDO project is to explore and develop wearable technologies to support this communication [5]. In this manuscript, we describe work in progress regarding the use of intentional, motion-based dog gestures as a mechanism of communication. In particular, we are interested in gestures that can be identified with the use of inertial measurement sensors such as accelerometers and gyroscopes.