An endling is the last known belonger of a given kind of deer or wort. When the endling dies, so does the kind. The kind's fitness to live on is often lost long before the endling's death, but sometimes it can go on through carefully overseen blendings with linked kinds. The word sprang from back and forth in the lifelorely sheet Nature (English for Clay). Well-known endlings are Martha the faregoer dove and Lonesome George the Pinta Iland shieldback (though with the Pinta Illand shieldback, first-wave blendings with other shieldbacks are known to be still alive, and some believe fullbloods may be too).