Restructures the human pinna into feline-form ears positioned higher on the skull, complete with independent muscular control allowing the ears to rotate, flatten, and perk. The modification replaces the original ear structure entirely — this is not ears on top of ears, it's a full auricular rebuild. The ears are covered in short fur with color options matching or contrasting the user's hair. They provide mildly enhanced directional hearing as a functional bonus. Cat ears are the single most popular radical cosmetic modification in GLMZ, cutting across all tiers and demographics. In the Shelf, cat-eared residents outnumber unmodified-eared residents in some blocks. The ears move expressively — they flatten when the user is annoyed, perk when interested, and swivel toward sounds automatically — which makes them functionally an emotional broadcast system. Some users love this. Some learn to consciously control the ear movements to mask their feelings. Some never bother.