Otter (Lutra lutra) The otter population has decreased in a disastrous way in our country since the 1950s, when it was common all over the country. Nowadays the otter is quite common in northern Sweden, and in small, scattered groups in southern Sweden. In the winter the male and the female live together, otherwise they live alone. In most cases the pups are born in May in our country. Then they weigh 130 grams and are blind the first two weeks. Usually they are two and are suckled for two months, but they stay with their mother for a whole year.

Order: Predators (Carnivora)

Family: Weasels (Mustelidae)

Weight: Males 8-12 kilos

             Females 6-8 kilos

Life span: Up to 18-20 years

Gestation period: 60-63 days

Pups: In most cases two, but can vary between 1 and 5. They become sexually mature after 2-3 years.