The gestation period in otters is about 60 to 86 days. The newborn pup is cared for by the mother, father and older offspring. Female otters reach sexual maturity at approximately two years of age and males at approximately three years. After one month, the pup can leave the holt and after two months, it is able to swim. The pup lives with its family for approximately one year. Otters live up to 16 years.