Mammalian Influence (Common)
This animal influence category does not include fish-adjacent/aquatic mammals like whales, dolphins, etc. Some mammals also have species-exclusive traits, depending on said species.
Non-Mammalian Influence (Uncommon)
This category includes: avian, reptilian, aquatic, and amphbian types. Face still needs to generally resemble a mammalian Whiffling in most cases, but can have some alternative influences (see. beaks on avian Whifflings). For aquatics, they still also need four limbs. See more in Design Guide.
Mythical Creature Influence (Rare)
This category includes any animal species that are mythical or imaginary, ex. dragons or unicorns.
Crossbreed Influence (Special)
Crossbreed Whifflings only appear naturally through breeding, and are a cross of their parents' animal influences. Sometimes (rarely) sold through sales. Ex. Cat-dog.
Extinct Influence (Rare)
This animal influence covers animals which are currently extinct, such as non-avian dinosaurs, or just modern-day extinct species.