Otter Otter Otters are carnivorous mammals in the subfamily Lutrinae. The 13 extant otter species are all semiaquatic, aquatic or marine, with diets based on fish and invertebrates. Lutrinae is a branch of the weasel family Mustelidae, which also includes badgers, honey badgers, martens, minks, polecats, and wolverines. The word "otter" derives from the Old English word "otor" or "oter". This, and cognate words in other Indo-European languages, ultimately stem from the Proto-Indo-European language root *wódr̥, which also gave rise to the English word "water". An otter's den is called a holt or couch. Male otters are called dogs or boars,
Tarka the Otter wanders around North Devon alone. His first mate is an elderly otter called Greymuzzle, who is killed during Tarka's first winter, which is unusually harsh. In his second year, he fathers a litter of cubs with his second mate, White-tip. Throughout the book Williamson juxtaposes Tarka with his main enemy, the local otter hunt, and particularly the pied hound Deadlock, "the truest marking-hound in the country of the Two Rivers" (p. 23). The book ends with a climactic nine-hour hunt of Tarka by the pack, and a confrontation between Tarka and Deadlock. Williamson's attitude to the hunt is somewhat ambivalent: