Beaver tail is something you would have seen on the table of a European Catholic family in the Middle Ages. Fasting for religious reasons generally meant abstaining from animal products, except for fish. So how did the beaver get onto the table? In that era, the beaver (always swimming about with it's scaly tail) was considered to be a fish. And they're not the only ones who dined on the semiaquatic rodent. Indigenous peoples in Canada used to cook the tails on an open fire and consume them as a source of protein and fat. If you're wondering what it tastes like, check out this firsthand experience from writer Aaron Goldfarb.