Litter Size

How many babies does a Marine otter have at once? (litter size)

How many baby Marine otters are in a litter?

A Marine otter (Lontra felina) usually gives birth to around 2 babies.

Each of those little ones spend around 76 days as a fetus before they are released into the wild. Upon birth, they weight 136 grams (0.3 lbs) and measure 91.3 cm (3′ 0″). They are a member of the Mustelidae family (genus: Lontra). An adult Marine otter grows up to a size of 67.8 cm (2′ 3″).

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 average litter size of a Marine otter is 2

The marine otter (Lontra felina) is a rare and relatively unknown South American mammal of the weasel family (Mustelidae). The scientific name means “otter cat”, and in Spanish, the marine otter is also often referred to as gato marino: “marine cat”. The marine otter (while spending much of its time out of the water) only lives in saltwater, coastal environments and rarely ventures into freshwater or estuarine habitats. This saltwater exclusivity is unlike most other otter species, except for the almost fully aquatic sea otter (Enhydra lutris) of the north Pacific.

Other animals of the family Mustelidae

Marine otter is a member of the Mustelidae, as are these animals:

Animals that share a litter size with Marine otter

Those animals also give birth to 2 babies at once:

Animals with the same weight as a Marine otter

What other animals weight around 11.2 kg (24.69 lbs)?

Animals with the same size as a Marine otter

Also reaching around 67.8 cm (2′ 3″) in size do these animals: