Here’s a link to a newer walking robot than “Big Dog”, called “Alpha Dog”. It demonstrates that, unlike the mostly futile efforts to create true Ai, with a lot of work, you can create a Robot That Jumps.
Here’s a related post:
In the first video, we see silent (?) operation – the system appears to be running on battery power. In the second, we can hear the familar noise of a fossil-fuel engine. If we leave out the “power problem” we have a early walking robotic prototype. It’s really entertaining to see how the final design is more Goat than Dog.
Robots That Jump 