Mass: 7.1 kg based on Bellows and Mitchell 2002 and Feuer 1958

Diet: piscivore based on Knudsen and Hale 1968

Abundance: 0.02 to 1.51% (median 0.26%)

Latitudinal range: 28.1° to 56.3°

Habitats: (15), boreal forest/taiga (1), temperate broadleaf/mixed forest (2)

Found in 18 samples

Canada: DjPp-8 (level A) (Holocene), Grassy Bay (Holocene), Algar

United States: Haw River, Ardis (Late Pleistocene), Vess Cave (Late Pleistocene), Golf Course (Late Pleistocene), Lower Walnut Settlement (Holocene), Watson Brake (6.4 mm fraction) (Holocene), Harris Creek (Holocene), Itasca Bison Site (Holocene), Cole Gravel Pit (Holocene), Meyer Cave (Holocene), Bootlegger Sink (Pleistocene - Holocene), Kathy's Pit (Pleistocene - Holocene), Bull Neck Swamp Research Forest, Marmes Rockshelter (Harrison horizon) (Pleistocene - Holocene), Inglis 1C (Early Pleistocene)

♀ body mass	6933 kg	N = 3	Bellows and Mitchell 2002
♀ body mass	8618 kg	N = 1	Feuer 1958
♂ body mass	6833 kg	N = 3	Bellows and Mitchell 2002
♀ ear length	19 mm	N = 3	Bellows and Mitchell 2002
♀ ear length	14 mm	N = 1	Feuer 1958
♂ ear length	20 mm	N = 3	Bellows and Mitchell 2002
♀ hind foot length	116 mm	N = 3	Bellows and Mitchell 2002
♀ hind foot length	125 mm	N = 1	Feuer 1958
♂ hind foot length	120 mm	N = 3	Bellows and Mitchell 2002
♀ tail length	376 mm	N = 3	Bellows and Mitchell 2002
♀ tail length	405 mm	N = 1	Feuer 1958
♂ tail length	397 mm	N = 3	Bellows and Mitchell 2002
♀ total body length	1071 mm	N = 3	Bellows and Mitchell 2002
♀ total body length	1140 mm	N = 1	Feuer 1958
♂ total body length	1080 mm	N = 3	Bellows and Mitchell 2002

See also Lontra, Lontra longicaudis