Here are a few description options for a WordPress post tag titled “人畜共通” (Rén Xù Gōng Tōng) in Traditional Chinese, ranging in tone and detail:

**Option 1 (Concise & Informative):**

> 標籤：人畜共通。 涵蓋同時影響人類與動物的議題，例如傳染病、環境污染及人道關懷等。 (Biao qian: Ren xu gong tong. Han gai tong shi ying xiang ren lei yu dong wu de yi ti, li ru chuan ran bing, huan jing wu ran ji ren dao guan huai deng.)
>
> _Translation: Tag: Zoonoses. Covers topics affecting both humans and animals, such as infectious diseases, environmental pollution, and humanitarian concerns._

**Option 2 (Slightly More Descriptive):**

> 人畜共通：這個標籤集中討論跨越人類與動物的議題，包括疾病、醫學、公共衛生、動物福利、環境保護，以及人類與動物之間的互動關係等等。 (Ren xu gong tong: Zhe ge biao qian ji zhong tao lun kua yue ren lei yu dong wu de yi ti, bao kuo ji bing, yi xue, gong gong wei sheng, dong wu fu li, huan jing bao hu, yi ji ren lei yu dong wu zhi jian de hu dong guan xi deng deng.)
>
> _Translation: Zoonoses: This tag focuses on issues that span humans and animals, including diseases, medicine, public health, animal welfare, environmental protection, and the interactions between humans and animals, etc._

**Option 3 (Emphasis on Interconnection):**

> 人畜共通：探索人類、動物及環境之間密不可分的關係。此標籤下的文章將探討三者彼此影響的各種面向，希望能促進更全面的理解與更負責任的行動。 (Ren xu gong tong: Tan suo ren lei, dong wu ji huan jing zhi jian mi bu ke fen de guan xi. Ci biao qian xia de wen zhang jiang tan tao san zhe bi ci ying xiang de ge zhong mian xiang, xi wang neng cu jin geng quan mian de li jie yu geng fu ze ren de xing dong.)
>
> _Translation: Zoonoses: Exploring the inseparable relationship between humans, animals, and the environment. Articles under this tag will examine the various aspects of their mutual influence, hoping to promote a more comprehensive understanding and more responsible actions._

**Option 4 (Focus on Specific Threats):**

> 人畜共通：關注可能同時威脅人類與動物的議題，例如新型傳染病爆發、病原體的傳播模式、化學品污染以及氣候變化帶來的風險等。 (Ren xu gong tong: Guan zhu ke neng tong shi wei xie ren lei yu dong wu de yi ti, li ru xin xing chuan ran bing bao fa, bing yuan ti de chuan bo mo shi, hua xue pin wu ran yi ji qi hou bian hua dai lai de feng xian deng.)
>
> _Translation: Zoonoses: Focusing on issues that may threaten both humans and animals, such as outbreaks of new infectious diseases, the transmission patterns of pathogens, chemical pollution, and the risks associated with climate change, etc._

**Key Considerations When Choosing:**

* **Your Blog’s Focus:** Which aspects of “人畜共通” (zoonoses) are most central to your content?
* **Target Audience:** Is your audience medical professionals, general readers, or something else?
* **Desired Tone:** Formal, informative, concerned, etc.?
* **Word Count Limitations (if any):** Some WordPress themes may have limitations on tag description length.

Remember to choose the option that best reflects your content and the goals of your blog. You can also slightly adjust these descriptions to customize them even further! Good luck!