Creatures
The creatures module is a way to represent the creatures and species that inhabit your world. If your world has no use for this module, you can disable it.
Creatures vs Races
A question that comes up is when to use the creatures module vs the races module. This is a fair question, and as always in Kanka, is up to the user.
The main difference between creatures and races, is that characters can be assigned to races, while creatures live on their own.
In that sense, creatures are a worldbuilding element, while races are a game mechanic. Another way is to ask yourself if an entry of a race or creature can become a named character with motivations. If so, making it a race and character might make sense. However, if your players have the speak with animals spell and you name a blue jay creature, simply adding that name as an alias might be enough.
Changing the categoriy
If you’ve created many creatures but meant to create races instead, you can easily bulk convert their category.