There is usually a single litter per year. The offspring are usually tiny and blind at birth. The young of Enhydra, however, are born with their eyes open and in a more advanced stage than the young of other mustelids. The young of most genera can care for themselves at about 2 months and are sexually mature after a year or 2. The potential longevity in the wild is generally 5-20 years.
Mustelids sometimes kill poultry, but they also help to keep rodents in check.
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