In one work, a wife is forced to copulate with one of these animals after poisoning her husband and killing her sister. In that work, that one of these animals eats a crown of roses in order to turn back into a human. The story of Psyche and Cupid originates from that novel, which is titled for one of these animals and is the only entirely surviving Latin novel from antiquity. In one Aesop fable, one of these animals falls into a river when a miller and his son try carrying it to market. The novel (-5[1])Metamorphoses, by Apuleius, concerns a man who is turned into a golden specimen of this animal. For 10 points, name this stereotypically stubborn beast of burden. ■END■ (10[1])