Here are a few options for the WordPress tag description, depending on what you want to emphasize. I have provided a range from concise to slightly more detailed:

**Option 1: Concise & General**

* **Description:** 了解養貓的花費。 (Understand the costs associated with owning a cat.)

**Option 2: Slightly More Descriptive**

* **Description:** 貓咪費用包括食物、醫療、玩具及其他開銷。 (Cat costs include food, medical care, toys, and other expenses.)

**Option 3: Focusing on Planning & Budgeting**

* **Description:** 考慮養貓前的費用預算，包括初期及長期支出。 (Plan your cat ownership budget, including initial and long-term expenses.)

**Option 4: Targeted to New Cat Owners**

* **Description:** 新手養貓必看的費用指南，幫助你了解養貓的各種開銷。 (An essential cost guide for new cat owners, helping you understand all the expenses associated with owning a cat.)

**Option 5: Focusing on different budget factors**

* **Description:** 養貓的費用會因不同因素而異，包括品種、健康和其他需求。了解影響貓咪開支的因素。 (The cost of owning a cat varies based on different factors, including breed, health, and other needs. Learn the factors that affect a cat’s expenses.)

**Which to Choose?**

Choose the description that best reflects the type of content you’ll be tagging with “貓咪費用”. If your posts are broad, Option 1 or 2 are good. If you’re writing guides, Option 4 might be best. If you want to cover budgeting, then Option 3 would be ideal. If you plan to cover different details involved in a budget, use Option 5.

Remember that the description helps people find your content through search and browsing, so keep it clear and relevant!