FUKUOKA--Only three sea otters remain at aquariums in Japan, and they are now treated like rock stars because of their advancing years. Japan was once home to dozens of the cute mammals.

The trio are seen swimming together, playing underwater and cuddling on land. Giant otters - or Pteronura brasiliensis - are South American carnivorous mammals that can grow up to a length of 5ft ...

Most folks are also probably familiar with the cute and fuzzy sea otters of the West Coast of the U.S. (think “cuddle party” from Finding Dory). But there are otters in the Central and Eastern ...