When using a mod with a large number of added biomes (such as Biomes o' Plenty), it is a pain to try to list every biome that each animal should spawn into. Perhaps switching it to a blacklist format would make it much easier. Apologies if this is already implemented and I'm too blind to see it. Thank you for your time and mods!

Edit: Or perhaps an ability to do "biomesoplenty:*" as if importing.