Here are a few options for a WordPress post_tag description, playing with different tones:

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

> 台灣犬 (Taiwanese Dog) – 關於台灣犬的文章、照片、影片及其他相關資訊。歡迎深入了解這種獨特的本土犬種。
>
> *Translation: Taiwanese Dog – Articles, photos, videos, and other relevant information about the Taiwanese Dog. Welcome to learn more about this unique native dog breed.*

**Option 2 (Focus on Breed Characteristics):**

> 台灣犬 – 具有忠誠、勇敢和聰明等特質的台灣犬。在這裡，您可以找到牠們的生活點滴、飼養指南以及與牠們相關的有趣故事。
>
> *Translation: Taiwanese Dog – Taiwanese Dogs, known for their loyalty, bravery, and intelligence. Here you can find anecdotes about their lives, guides to owning them, and interesting stories related to them.*

**Option 3 (Community Focused):**

> 台灣犬 – 與其他台灣犬愛好者分享您對台灣犬的熱愛！這裡有討論、交流和關於牠們的最新消息。
>
> *Translation: Taiwanese Dog – Share your love for Taiwanese Dogs with other enthusiasts! Here you’ll find discussions, interactions, and the latest news about them.*

**Option 4 (Concise & Keyword-Rich):**

> 台灣犬 (Formosan Mountain Dog)。 探索台灣原生犬種，牠們的歷史、保育、飼養及相關新聞。
>
> *Translation: Taiwanese Dog (Formosan Mountain Dog). Explore this native Taiwanese dog breed, its history, conservation, care and related news.*

**Key considerations when choosing:**

* **Target Audience:** Who are you writing this tag description for? Novice dog owners? Experienced breeders? General readers?
* **Focus of Your Website:** What type of content do you publish (e.g., educational, personal stories, news)?
* **Length:** WordPress tag descriptions are generally short, so keep it concise.
* **Keywords:** Include relevant terms (like “Formosan Mountain Dog”) to help with search engine optimization (SEO).
* **Tone:** Adjust the tone (formal, friendly, passionate) to match your overall website style.

I recommend picking the option that best suits your website’s content and intended audience. Good luck!