Humans are always so gung-ho about their prehistoric ancestors. Did they origniate in Africa? When did the walk on two legs? When did they get agriculture? Well all that is boring by comparison to my giant rodent ancestors! I found this great post about them on a blog call The World We Don’t Live In. The whole blog is really great for the science-minded (and if a capybara can be science-minded which of you humans cannot?), so read the whole thing. But the best post is the one on my giant ancestors.