I had to disable the cold water freezing because all my modded animals were dying in the water... I don't think penguins should die in cold water for instance :)

I think it would be cool if this feature only affected players OR one could blacklist mobs in the config file for that kind of damage

Good point! I‘ll have to do that for multiple mobs then… mammoths from adventurez died on permafrost as well :D

That's a nice suggestion, we'll definitely add it.
However it has to be noted that penguins should be made immune to freezing damage. Maybe report it to that mod author too since they would die in powder snow and that doesnt make sense either

done for upcoming update. Add modded mobs to the vanilla tag: entity_types/freeze_immune_entity_types to make them immune.