Spotted-necked otter

The spotted-necked otter (Hydrictis maculicollis), or speckle-throated otter, is an otter native to sub-Saharan Africa.

Spotted-necked otter[1]
Spotted-necked otter 1
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Mustelidae
Genus: Hydrictis
Pocock, 1921
H. maculicollis
Binomial name
Hydrictis maculicollis
(Lichtenstein, 1835)
Spotted-necked Otter area
Distribution of spotted-necked otter

Lutra maculicollis


The spotted-necked otter is a relatively small species, with males measuring 71 to 76 cm (28 to 30 in) from nose to rump, and weighing 5.7 to 6.5 kg (13 to 14 lb), while females are 57 to 61 cm (22 to 24 in) and 3.0 to 4.7 kg (6.6 to 10.4 lb). The tail is long and muscular, measuring 39 to 44 cm (15 to 17 in) in both sexes.[3][4] Like many other otters, it is sleek and has webbed paws for swimming. Females have two pairs of teats, and while males have a large scrotum, the penis is hidden beneath the skin, to reduce drag while swimming.[5]

Although considerable variation exists among individuals, their fur is usually reddish to chocolate brown and marked with creamy or white blotches over the chest and throat. The head is broad with a short muzzle, small rounded ears, and a hairless nose pad. The teeth are adapted for consuming fish, with large sharp upper canine teeth, curved lower canines, and sharp carnassial teeth. The jaws are similarly adapted, with the mandibular fossa fitting so snugly into the condyle on the lower jaw that the latter cannot move sideways, making it easier to capture and hold fish.[5]

Although up to five subspecies have previously been identified, these most likely represent a natural variation in appearance between individuals, and no subspecies are currently recognised.[5]

Distribution and habitat

Spotted-necked otters are found in lakes and larger rivers throughout much of Africa south of 10°N. They are common in Lake Victoria and across Zambia, but for some unexplained reason often are absent from what appear to be suitable habitats, such as the lakes and rivers of East Africa and the Zambezi below Victoria Falls.[6] No evidence of spotted-necked otters venturing into salt water has been found.[5]

Behavior and biology

Spotted-necked otters feed primarily on fish, typically less than 20 cm (7.9 in) in length, but also eat frogs and small crustaceans, especially when fish are in short supply.[7] They are diurnal, and appear to hunt entirely by sight using short dives of less than 20 seconds each in clear water with good visibility.[5] Larger prey items are carried ashore, while smaller items are eaten while treading water.[7] Known predators on the otters include crocodiles and African fish eagles.[5]

The otters are sometimes found in family groups, but appear to be social only under certain conditions. Males and females are separated for at least part of the year.[6] They normally hunt alone, except when mothers are training their young, and are not territorial, sheltering through the night in short burrows, rock crevices, or patches of dense vegetation. On land, they travel mainly by the use of regular paths, and rarely move more than 10 m (33 ft) from river or lake banks.[5] As with many other otters, these paths are marked by "sprainting" sites in which they habitually defecate and urinate.[7]

Spotted-necked otters are very vocal, uttering high, thin whistles and rapid, shrill chatters.[8] The female bears a litter of up to three young after a gestation period around two months. The young are born blind and helpless, and the mother cares for them for almost a year.[5][8]


The spotted-necked otter is in decline, mostly due to habitat destruction and pollution of its clear-water habitats. It is hunted as bushmeat.[9]


  1. ^ Wozencraft, W.C. (2005). "Order Carnivora". In Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 532–628. ISBN 978-0-8018-8221-0. OCLC 62265494.
  2. ^ Reed-Smith, J.; Jacques, H. & Somers, M.J. (2015). "Hydrictis maculicollis". The IUCN Red List of Threatened Species. IUCN. 2015: e.T12420A21936042. doi:10.2305/IUCN.UK.2015-2.RLTS.T12420A21936042.en. Retrieved 14 December 2017.
  3. ^ BBC Wild Facts (2011).
  4. ^ Archived 2011-09-06 at the Wayback Machine (2011).
  5. ^ a b c d e f g h Larivière, S. (2002). "Lutra maculicollis" (PDF). Mammalian Species. 712: Number 712: pp. 1–6. doi:10.1644/1545-1410(2002)712<0001:LM>2.0.CO;2.
  6. ^ a b Richard Despard Estes, ed. (1992). The Behavior Guide to African Mammals : Including Hoofed Mammals, Carnivores, Primates. University of California Press. p. 437. ISBN 978-0-520-08085-0.
  7. ^ a b c Kruuk, H. & Goudswaard, P.C. (1990). "Effects of changes in fish populations in Lake Victoria on the food of otters (Lutra maculicollis Schinz and Aonyx capensis Lichtenstein)". African Journal of Ecology. 28 (4): 322–329. doi:10.1111/j.1365-2028.1990.tb01167.x.
  8. ^ a b Procter, J. (1963). "A contribution to the natural history of the spotted-necked otter (Lutra maculicollis Lichtenstein) in Tanganyika". East African Wildlife Journal. 1 (1): 93–102. doi:10.1111/j.1365-2028.1963.tb00180.x.
  9. ^ Hoffmann M (2008). "Lutra maculicollis". IUCN Red List of Threatened Species. Version 2008. International Union for Conservation of Nature. Retrieved 2008-10-13.

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