This illustration of an Indian rhinoceros was originally made by noted artist Albrecht D羹rer. D羹rer himself had never seen a rhinoceros, but based his drawing on one made in Lisbon of a rhinoceros brought there from India in 1515. Historiae Animalium (Studies on Animals) is considered to be the first modern zoological work. This first attempt to describe many of the animals accurately is illustrated with hand-colored woodcuts drawn from personal observations by Gesner and his colleagues. Conrad Gesner (March 26, 1516 - December 13, 1565) was a Swiss naturalist and bibliographer. To his contemporaries he was best known as a botanist, but in 1551 he was the first to describe brown adipose tissue; and in 1565 the first to document the pencil. He died of the plague, at the age of 49, the year after his ennoblement.