Since Minecraft's base engine does not natively support custom entity models (CEM) in resource packs, you must use a mod to bridge the gap.

: The pack aims for a "fluffier" look, often described as "vanilla-like" because it retains the original Minecraft aesthetic while altering the physical dimensions. Versions & Variants :

A small cute pack that will replace the cat model with a chubby version. Requires EMF and ETF (or Optifine)

: When used with Optifine, the pack enables Random Entities features, allowing for multiple custom textures and realistic breed variations. Installation Requirements

The topic primarily refers to a popular community-made resource pack that transforms standard Minecraft cats into "chubby" or "heckin chonker" versions. To function correctly on Java Edition, this pack requires Optifine or alternative entity-modifying mods like Entity Model Features (EMF) and Entity Texture Features (ETF) to support the custom 3D models. What is the Fat Cat Resource Pack?

: Many community versions offer over 11 different color schemes, including "nebula" (blue/aqua) and "pink" variants.

: For players on Fabric or newer versions (1.19–1.21), the pack is often used with Entity Model Features (EMF) and Entity Texture Features (ETF) . Why the Community Loves It Fat Cat - Minecraft Resource Pack - Modrinth

: A separate PvP-focused version that applies cat-themed textures to items like wool, TNT, and swords, often featuring cat faces on crossguards and icons.