Turns out that while we weren't looking the sapient beavers that will succeed us as the dominant life form on this planet have developed functional wood-and-steel robots. These are, of course, designed to accomplish menial tasks so their furry, flat-tailed masters can more easily relax in hot mud baths and ponder whatever philosophies beavers ponder...
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The post-apocalyptic beavers have robots now
Source: PC Gamer (opens in a new tab)