If Chasm uses the same spawn containers as vanilla

works on the chasm?

Yeah, sounds about right

I feel like this was the original design intention- The dossiers and explorer notes say as much. I feel like Bulbdogs were put in the fertile zone anyway because they were seen as the most marketable/mascot of the pets and they wanted them available immediately which... Fair.

I've considered them- Glowtails only in fertile cave is a little odd, but birds as cave-exclusive spawns is moreso. Potentially swapping the elemental vault featherlights for glowtails, or putting glowtails into the bio cave as well having them as a spawn in all caves.. wasn't sure exactly what to do with them, but I'm kinda liking the all caves idea so maybe I'll go with that

Great idea! Any chance you'd consider also swapping the featherlight and glowtail spawns? Featherlights in the cave, and glowtails in the red zone seems to me like they fit better. Or would at least change it up.

Great idea. WC definitely should have thought of it! Thanks.