By reader request, today's Woof (and the last Woof) features a canid that has been extinct since 1876.
The Warrah (Dusicyon australis), also known as the Falkland Islands Wolf, was the only species of mammal known to be native to the Falkland Islands. It was the only extant species of the genus Dusicyon, and is the first known canid to become extinct in modern times. It was long believed to be closely related to the genus Lycalopex, meaning the Culpeo, but a DNA analysis conducted in 2009 revealed that its closest living relative is the Maned Wolf.
Charles Darwin observed in 1833 that the Warrah existed on both East and West Falkland, but could not determine whether or not the species differentiated between the two populations. It's likely that it fed on ground-dwelling birds and rodents, but now no one can ever know that for certain. It may have lived in burrows, like other similar canids.
The Warrah had no fear of humans at the time it was discovered, which made it very easy to lure in to kill. When Darwin first saw them they were already in decline, being seen as a threat to sheep. Below is Darwin's description of the animal:
The only quadruped native to the island, is a large wolf-like fox, which is common to both East and West Falkland. Have no doubt it is a peculiar species, and confined to this archipelago; because many sealers, Gauchos, and Indians, who have visited these islands, all maintain that no such animal is found in any part of South America. Molina, from a similarity in habits, thought this was the same with his "culpeu"; but I have seen both, and they are quite distinct. These wolves are well known, from Byron's account of their tameness and curiosity; which the sailors, who ran into the water to avoid them, mistook for fierceness. To this day their manners remain the same. They have been observed to enter a tent, and actually pull some meat from beneath the head of a sleeping seaman. The Gauchos, also, have frequently killed them in the evening, by holding out a piece of meat in one hand, and in the other a knife ready to stick them. As far as I am aware, there is no other instance in any part of the world, of so small a mass of broken land, distant from a continent, possessing so large a quadruped peculiar to itself. Their numbers have rapidly decreased; they are already banished from that half of the island which lies to the eastward of the neck of land between St. Salvador Bay and Berkeley Sound. Within a very few years after these islands shall have become regularly settled, in all probability this fox will be classed with the dodo, as an animal which has perished from the face of the earth. Mr. Lowe, an intelligent person who has long been acquainted with these islands, assured me, that all the foxes from the western island were smaller and of a redder colour than those from the eastern. In the four specimens which were brought to England in the Beagle there was some variation, but the difference with respect to the islands could not be perceived. At the same time the fact is far from improbable.