Here are a few options for the description of the WordPress post tag “pet euthanasia” in Traditional Chinese, varying in formality and directness:

**Option 1 (Most Direct and Concise):**

主題標籤：寵物安樂死 (Chǔtí biāojiān: Chǒngwù ān lè sǐ) – 關於寵物安樂死的文章。 (Guānyú chǒngwù ān lè sǐ de wénzhāng.)

* **Translation:** Tag: Pet Euthanasia – Articles about pet euthanasia.
* **Pros:** Clear, concise, and easily understood.
* **Cons:** Might feel a bit blunt.

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

主題標籤：寵物安樂死 (Chǔtí biāojiān: Chǒngwù ān lè sǐ) – 關於終結寵物痛苦，以及如何做出艱難決定的文章。 (Guānyú zhōngjié chǒngwù tòngkǔ, yǐjí rúhé zuò chū jiānnán juédìng de wénzhāng.)

* **Translation:** Tag: Pet Euthanasia – Articles about ending a pet’s suffering, and how to make difficult decisions.
* **Pros:** More empathetic, acknowledges the emotional weight of the topic.
* **Cons:** Slightly longer.

**Option 3 (Focus on Information and Support):**

主題標籤：寵物安樂死 (Chǔtí biāojiān: Chǒngwù ān lè sǐ) – 資訊分享，以及關於寵物安樂死選擇、準備與哀悼的文章。 (Zīxùn fēnxiǎng, yǐjí guānyú chǒngwù ān lè sǐ xuǎnzé, zhǔnbèi yǔ āidào de wénzhāng.)

* **Translation:** Tag: Pet Euthanasia – Information sharing, and articles about pet euthanasia choices, preparation, and grieving.
* **Pros:** Provides context about the information provided.
* **Cons:** The longest option, but still relatively brief.

**Option 4 (Simply the Title):**

* 主題標籤：寵物安樂死 (Chǔtí biāojiān: Chǒngwù ān lè sǐ)

* **Translation:** Tag: Pet Euthanasia
* **Pros:** Simplest option. Useful if the content tag itself is explanatory enough within the context of the page.
* **Cons:** Least informative. Less helpful if users are unsure of what to expect.

**Which to Choose:**

The best option depends on the overall tone of your website and the content of the posts. If your aim is to provide a factual and supportive resource, option 3 or 2 is probably the best choice. If you want to be direct and efficient, option 1 might work. Option 4 is best if it doesn’t require a very long explanation as it should be self explanatory.
You can directly copy/paste and use the specific option most appropriate for your website. Remember to adjust spacing and punctuation as needed.