How many baby Eurasian otters are in a litter?
A Eurasian otter (Lutra lutra) usually gives birth to around 2 babies.With 1 litters per year, that sums up to a yearly offspring of 2 babies.
Each of those little ones spend around 64 days as a fetus before they are released into the wild. Upon birth, they weight 285 grams (0.63 lbs) and measure 1.2 meter (4′ 0″). They are a member of the Mustelidae family (genus: Lutra). An adult Eurasian otter grows up to a size of 68.9 cm (2′ 4″).
To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.
The Eurasian otter (Lutra lutra), also known as the European otter, Eurasian river otter, common otter, and Old World otter, is a semiaquatic mammal native to Eurasia. The most widely distributed member of the otter subfamily (Lutrinae) of the weasel family (Mustelidae), it is found in the waterways and coasts of Europe, many parts of Asia, and parts of northern Africa. The Eurasian otter has a diet mainly of fish, and is strongly territorial. It is endangered in some parts of its range, but is recovering in others.
Other animals of the family Mustelidae
Eurasian otter is a member of the Mustelidae, as are these animals:
- European badger with 3 babies per pregnancy
- Striped polecat with 2 babies per pregnancy
- Asian small-clawed otter with 1 babies per pregnancy
- Palawan stink badger weighting around 2.5 kilograms (5.51 lbs)
- Colombian weasel weighting only 211 grams
- North American river otter with 2 babies per pregnancy
- Cameroon clawless otter with 2 babies per pregnancy
- African clawless otter with 2 babies per pregnancy
- Least weasel with 5 babies per pregnancy
- European mink with 4 babies per pregnancy
Animals that share a litter size with Eurasian otter
Those animals also give birth to 2 babies at once:
- Large Indian civet
- Chiriqui harvest mouse
- Lundomys
- Siberian flying squirrel
- Tolai hare
- Jaguarundi
- Web-footed tenrec
- Iberian lynx
- Mountain treeshrew
- Savi’s pipistrelle
Animals that get as old as a Eurasian otter
Other animals that usually reach the age of 22 years:
- Guatemalan black howler with 20 years
- Golden lion tamarin with 24.75 years
- Siberian ibex with 22.25 years
- African brush-tailed porcupine with 22.83 years
- Greater spot-nosed monkey with 23 years
- Black-fronted duiker with 19.67 years
- Barbary macaque with 22 years
- Townsend’s big-eared bat with 21.17 years
- Naemorhedus sumatraensis with 21 years
- Gray-bellied night monkey with 18 years
Animals with the same weight as a Eurasian otter
What other animals weight around 8.86 kg (19.54 lbs)?
- Phayre’s leaf monkey usually reaching 7.69 kgs (16.95 lbs)
- Maxwell’s duiker usually reaching 8.56 kgs (18.87 lbs)
- Pygmy hog usually reaching 7.92 kgs (17.46 lbs)
- Western brush wallaby usually reaching 8 kgs (17.64 lbs)
- Grey-cheeked mangabey usually reaching 7.39 kgs (16.29 lbs)
- Tonkean macaque usually reaching 10.07 kgs (22.2 lbs)
- Dusky leaf monkey usually reaching 7.18 kgs (15.83 lbs)
- Peruvian spider monkey usually reaching 7.09 kgs (15.63 lbs)
- Patas monkey usually reaching 7.99 kgs (17.61 lbs)
- Patagonian mara usually reaching 8.03 kgs (17.7 lbs)
Animals with the same size as a Eurasian otter
Also reaching around 68.9 cm (2′ 4″) in size do these animals:
- Formosan rock macaque gets as big as 56 cm (1′ 11″)
- Red forest duiker gets as big as 78.7 cm (2′ 7″)
- Delacour’s langur gets as big as 57.7 cm (1′ 11″)
- Salt’s dik-dik gets as big as 59.5 cm (2′ 0″)
- Honey badger gets as big as 68.4 cm (2′ 3″)
- Sarcophilus laniarius gets as big as 55.8 cm (1′ 10″)
- Geoffroy’s cat gets as big as 57.6 cm (1′ 11″)
- Suni gets as big as 59.9 cm (2′ 0″)
- Bush dog gets as big as 62.6 cm (2′ 1″)
- Lowland paca gets as big as 64.7 cm (2′ 2″)