Everyone knows that living things can be exchanged for other goods or currency, but sometimes they are traded so regularly they can be (and sometimes are) considered currency themselves. In this case if something is sufficiently close to alive counts too, for example a completely autonomous Clockwork Creature. Also see Weird Currency and Practical Currency.
- In Bone, residents of the valley use things like livestock as currency.
- Discworld. In the villages of Lancre, where hard currency is a rarity, commerce is more likely to be negotiated in chickens than in coins.
- In Gordon R. Dickson's Childe Cycle, the interstellar currency is largely based on skilled professionals. If a planet needs someone or something, they hire out a specialist in exchange.
- The Hitchhiker's Guide to the Galaxy series. Elderly relatives are used as currency.
- In B.C. the cavemen use live clams as currency.
- In Buffy the Vampire Slayer demons use kittens when playing poker.
- In Dungeons & Dragons fiends use souls, in the form of lower fiends, as currency.
- In Conker's Bad Fur Day, wads of bank notes are anthropomorphized.
- Souls are the standard currency in Demon's Souls and its spiritual successor Dark Souls since they are a source of great power.
- Vulgrim from Darksiders trades upgrades and items in exchange for souls.
- Beetles (scarabs) in Star Fox Adventures.
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