The document summarizes information about the thylacine, a now-extinct marsupial that used to live in Tasmania. Key details include: it had stripes and a brownish base color; females had a backward-facing pouch; they were nocturnal hunters that would kill other marsupials at night and feed from a single fresh kill; the reasons for their extinction included the arrival of humans, dogs, dingoes, loss of habitat to farming/grazing, and bounty hunters who were paid to kill them.