Here are a few options for the “寵物費用” WordPress post tag description in Traditional Chinese, each with a slightly different emphasis:

**Option 1: General & Concise**

> 這裡涵蓋了與寵物相關的各種費用資訊，包括食物、醫療、用品等。了解如何規劃您的寵物預算。
>
> *Translation: This covers information on all kinds of expenses related to pets, including food, medical care, supplies, etc. Learn how to plan your pet budget.*

**Option 2: Focused on Cost Breakdown**

> 關於飼養寵物的費用明細，包括日常開銷、意外支出，以及不同的寵物種類可能會有的額外花費。
>
> *Translation: Details on pet-related expenses, including daily costs, unexpected expenses, and additional costs that may arise depending on the type of pet.*

**Option 3: Emphasizing Budgeting & Saving**

> 掌握寵物費用，輕鬆規劃您的寵物預算！了解如何節省開支，並為您的毛小孩提供最好的照顧。
>
> *Translation: Take control of pet expenses and easily plan your pet budget! Learn how to save money and provide the best care for your furry friend.*

**Option 4: Adding Keywords for SEO**

> 寵物費用、養寵物的開銷、貓狗費用、寵物醫療、寵物保險、寵物食品、寵物用品，所有與寵物相關的費用資訊都在這裡。
>
> *Translation: Pet expenses, the cost of raising a pet, cat and dog expenses, pet medical care, pet insurance, pet food, pet supplies, all information related to pet expenses is here.* (This option focuses on keyword optimization, using a comma-separated list).

**Which Option to Choose?**

* **If you want a broad overview:** Option 1
* **If you are focused on price breakdown:** Option 2
* **If you want to encourage readers to budget:** Option 3
* **If you are prioritizing search engine optimization:** Option 4 (You could modify Option 4 to have more descriptive introduction along with the keywords).

Choose the description that best reflects the content you associate with this tag and the goals of your website. You can also adjust any of these options to better fit your specific needs.