Okay, the user wants me to translate "pack animal" into Traditional Chinese. Let me think about the correct term here. "Pack animal" usually refers to animals that are used to carry loads, like camels or horses. In Chinese, the term for pack animal is "驮獸". Let me double-check that. Yes, "驮" means to carry or bear a load, and "獸" is animal. So "驮獸" is the correct translation. The user specified to use Traditional Chinese, so I should make sure there's no simplification. Also, since the original content isn't in Chinese, I need to provide the translation without any extra text. Just the word "驮獸" in the response.