I expect dog to have a robotic hand and eyes, so it could refill himself, move bricks to a target location and put them onto the top of the wall, use stairs and

I expect dog to have a robotic hand and eyes, so it could refill himself, move bricks to a target location and put them onto the top of the wall, use stairs and so on. Of course it should not be a one-trick pony, the whole point is in something universal which could easily configured to perform different tasks.