So it's definitely a phasing issue. I saw none at all until I got near the Den of Sorrow, then suddenly over a dozen appeared. Any time I wandered away from the Den of Sorrow back into the Bamboo Wilds, they disappeared again. Going to assume there is a quest chain that can swap the phase for you, but I unfortunately am not sure which quest it is. I caught a few over at 65, 81. Hopefully that'll help someone.
1843 pets
So it's definitely a phasing issue. I saw none at all until I got near the Den of Sorrow, then suddenly over a dozen appeared. Any time I wandered away from the Den of Sorrow back into the Bamboo Wilds, they disappeared again. Going to assume there is a quest chain that can swap the phase for you, but I unfortunately am not sure which quest it is. I caught a few over at 65, 81. Hopefully that'll help someone.