The .rar extension indicates a compressed file, often found on third-party file-sharing sites. If you are trying to update your game, the safest method is to use official platforms:
This update was bundled with the console release of Animal Husbandry in April 2023 on PlayStation and Xbox. Green.Hell.Name.Your.Pets.part1.rar
It allows players to give custom names to their tamed animals once a trust level of 50% is reached. such as capybaras
A similar update was released for Green Hell VR in September 2025. Green.Hell.Name.Your.Pets.part1.rar
You build trust by feeding, watering, and cleaning the pens of your livestock, such as capybaras, tapirs, and peccaries.