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,
Otter Tail Power Co. v. United States Otter Tail Power Co. v. United States Otter Tail Power Co. v. United States, 410 U.S. 366 (1973), is a United States Supreme Court decision often cited as the first case in which the Court held violative of the antitrust laws a single firm's refusal to deal with other firms that denied them access to a facility essential to engaging in business (a so-called essential facility). Otter Tail Power Company (Otter Tail) is an investor-owned electric power utility with headquarters at Fergus Falls, Minnesota. It buys its electric power largely from the United States at the Government Bureau of Reclamation's