A wild otter was caught on film on Tsushima Island in southwestern Japan in February, marking the first sighting of the mammal in Japan in 38 years, a University of the Ryukyus team said Thursday.It is not known whether the observed otter was a Japanese river otter, which used to be found across Japan but is believed to have gone extinct, according to the team of researchers. A river otter was last spotted in 1979 in the western Japan city of Susaki, Kochi Prefecture.The Environment Ministry said an analysis of excrement samples collected on Tsushima Island during a survey there in July sug…READ FULL ARTICLE