Traits

Your furarrium has a trait that's only around sometimes!

This trait allows your furarrium to have a trait that can either exist or not (e.g., eyes that can be normal or turn blank, wings that are optional, objects on body that are only sometimes there, etc.)
You cannot have this trait be replaced by a different trait, only removed.

Your furarrium has multiple forms with different designs!

Unlike Optional Multiform and Color-Changing, this trait allows your traits to change between forms. Markings can change shape, objects can move or transform into entirely new objects, halos can turn to devil horns, etc.