You don't see a .chd (Compressed Hunks of Data) for a PS1 game unless:
This is the language matrix.
This specific dump includes multi-lingual assets. When you run the CHD on a real PS1 or emulator (DuckStation, ePSXe, RetroArch), the game will automatically detect your console’s language settings or allow you to switch. This is crucial for non-English speakers or those wanting to experience the game’s witty voice acting in other languages.
This denotes the included language tracks. The USA release of Sheep Raider is surprisingly multilingual. This specific ROM contains:
For a North American release, including Portuguese and Spanish was a smart move by Infogrames to appeal to the entire American continent. The voice acting remains classic, with Mel Blanc’s archived recordings used for the iconic character sounds.