Here are a few options for a “寵物往生” (Pet Passing) post tag description in Traditional Chinese, each with a slightly different nuance:

**Option 1 (Direct & Simple):**

> 關於您的毛孩離世、告別、懷念和紀念的相關文章。

* **Translation:** Articles related to your furry friend’s passing, farewell, remembrance, and commemoration.
* **Emphasis:** Focuses on the core themes.

**Option 2 (More Detailed & Empathetic):**

> 記錄和分享愛寵離世的悲傷、思念，以及如何處理後事、紀念牠們一生的文章。 讓我們一起陪伴您度過這段艱難的時光。

* **Translation:** Articles recording and sharing the grief, longing, and how to handle the aftermath, as well as commemorating your beloved pet’s life. Let us accompany you through this difficult time.
* **Emphasis:** Acknowledges the emotional difficulty and offers support.

**Option 3 (Practical & Informative):**

> 分享有關寵物善後處理、喪禮儀式、纪念及哀悼的方式，以及如何面對失去寵物的文章。

* **Translation:** Sharing articles about pet aftercare, funeral rituals, ways to commemorate and mourn, as well as how to cope with the loss of a pet.
* **Emphasis:** Focuses on practical information and coping strategies.

**Option 4 (Concise & Broad):**

> 關於毛孩離世的所有文章：告別、思念、纪念。

* **Translation:** All articles relating to a furry friend’s passing: saying goodbye, longing, remembrance.
* **Emphasis:** Very direct and encompasses all areas for a quick overview.

**Which to choose?**

* Consider your blog’s overall tone and the type of content you post.
* If you want to be more compassionate and supportive, choose Option 2.
* If you focus on practical advice, Option 3 might be best.
* Option 1 and 4 are good options for general use and concise descriptions.

I recommend testing a couple of these out to find which one best suits your needs! Remember to also use keywords like “寵物去世” (pet passing), “宠物善后” (pet aftercare), “寵物葬禮” (pet funeral) in your posts to maximize visibility.