If you are looking for the "Cat" aspect specifically, you can use the Kitty Totem of Undying resource pack from Modrinth to change the item's texture to a cat. Some players also use custom resource packs to wear the totem as a mask.
: If you take fatal damage while holding the totem in either your main hand or off-hand , it automatically activates to prevent death. Cat of Undying
(40 seconds), which is critical for surviving if you fell into lava. If you are looking for the "Cat" aspect
: Activation immediately clears all existing negative status effects, such as poison or wither. Visual Customization (40 seconds), which is critical for surviving if
In Minecraft, a common "useful feature" for the —often visually customized as a Kitty Totem through resource packs—is its ability to grant Fire Resistance upon activation. Key Functional Features
: The Totem of Undying will not save you from the /kill command or falling into the Void in the standard game. Totem of Undying - Minecraft Wiki
(5 seconds) to give you a temporary buffer of extra hearts.