There are 2 otters' exhibit at Ueno zoo, one is Eurasian otter and the other is ASCO. You can compare easily Eurasian otter and ASCO.
I went to Obihiro Zoo (Hokkaido Pref.) for the first time in two years. Things change.
Now, there are 3 North American River Otters(NAROs) in Japan. At Kushiro Zoo, a pair of NAROs live and are on exhibit.
約２年ぶりの東山動植物園。 Here's new post! Two otter babies were born last month.