That same day I saw the pangolin I saw a troop of monkeys crossing a landslide and a butterfly valley that was humming with hundreds of specimins from 15 species and this in early january.
The day before I saw wild sika deer in Kenting and taiwan pheasants on the 199.
I saw a juvenile black bear in Shei-Pa about 5 years ago. Seen sambar deer, lots of barking deer, wild boar. Civets, martins, squrrels. Never seen a flying squirrel though. Must get a nightlight.
Birds, mikado pheasant, swinhoes, mullers barbet, blue magpie and a dozen or so other endemic species.
Butterflies: about a 100 species. Last summer saw half a million in an acre of land in the Yellow Butterfly Valley. That is something everyone should see. Also seen swarms of purple butterflies in the forests of Maolin. Still trying to find the really good remote purple butterfly valleys around dawu and wanluan where they hang like garlands in the trees. This is the only other mass overwintering of butterflies in the entire world: the other being the monarch migration and overwintering in Mexico.
Snakes: cobras, turtle, russels, bamboo, beauty, banded krait.
I hate to burst your bubble but you didn’t see butterflies flying from Japan. In the past ten years there have only been about a dozen butterflies found going the other way. It is not a natural function but a freak accident. Likely they are riding or caught on the winds that blow from the south every spring. There may be a few that have made it the other way, but again it would be so rare.