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Here’s a pretty easy-looking programmable four-legged walking robot kit –

This is a robotic model best suited for learning to simulate the quadruped’s movement through the careful manipulation of the mini-servo motor on each of its 4 legs. Through careful studying and programming, one can simulate the various movement of a quadruped such as slow walk, fast running, turning left and right, 360 turning, etc. It will also enable one to program the animal to walk on various ground surfaces to experience the movement changes needed to enable the animal to move on these various surfaces.

Joinmax Digital Quadruped JM-4FT-001 – [via] overview & manufacturer’s page.