9. Nature (109 parts)
Elemental forces, foliage, teeth, and tails bring the LEGO world to life.
Some of the parts in this category are both difficult to sort and difficult to name. For example, parts that you might describe as a tail, horn, or vine are difficult to name — you might assume it is a vine when it's green or a horn when it's white.
Nonetheless, this is one of the most fun categories because it includes a lot of organically-shaped parts that can give LEGO models a nicely finished aesthetic.