Elves are a semi-bipedal arboreal species. They consider themselves to be immortal, though this is obviously difficult to verify. The oldest in year 1890 are no more than a thousand years old. Elves have antlers like a deer or, more rarely, curling horns like a ram. Historically, they lived almost entirely in trees, building their homes and cities high above the ground in old-growth forests. Their society is based around clans, with elves marrying and raising children within their own clan but breeding only with one of the other clans.