
Don’t you wish your pets could live forever in The Sims 4? If so, get the Pet Immortality Trait mod. It adds a custom trait called “Immortal,” which prevents your pets from dying as long as the trait is active. The trait doesn’t interfere with gameplay mechanics beyond preserving your beloved cats and dogs for as long as you want. Once applied, it quietly ensures your Sim’s pet remains an eternal companion. If you’re playing a legacy save or emotionally attached households, you need this mod. It’s a practical addition for any player who hates the heartbreak of losing a furry friend in-game. This trait is compatible with the base game and seamlessly integrates with CAS and trait menus.
Follow these steps to install Pet Immortality Trait on your Sims 4 game:
Download the mod file from the link above. Sims 4 mods typically come as .package or .ts4script files.
Open your Sims 4 Mods folder. The default location is: Documents/Electronic Arts/The Sims 4/Mods
Place the downloaded file directly into the Mods folder. You can organize mods into subfolders up to one level deep.
Launch The Sims 4 and go to Game Options > Other. Make sure "Enable Custom Content and Mods" is checked.
Restart the game if it was already running. The mod should now appear in your game.
Important: Always back up your save files before installing new mods. After Sims 4 updates, mods may need to be re-downloaded or updated by the creator.
Platform
The Sims 4 (PC/Mac)
Pro tip: If a mod stops working after a game update, check the creator's page for an updated version. Broken mods can cause the game to behave unexpectedly.
Created by
CrucibleGaming
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Published
December 29, 2025
Source
MustHaveMods.com
Last Updated
August 5, 2026