Would it be possible to find a way to make black dogs stay spawned during the day if you keep them indoors or nametag them? I really wanted to capture one as a "pet". Feel free to ignore if it breaks the lore too hard.

nametag it to keep it from despawning, will be out in the next update.
70dcaa7

I have them set in the upcoming update to not despawn in rain, but nothing yet involving name tags.