Here are a few options for the WordPress post_tag description “動物學” in Traditional Chinese, ranging in specificity and SEO considerations:

**Option 1: Simple and Concise (Good for general blog use)**

* **Description:** 研究動物的科學，包括生物學、行為學、演化等。

* **Translation:** The science of studying animals, including biology, behavior, evolution, etc.
* **Reasoning:** Provides a basic understanding of what the tag encompasses.

**Option 2: More Informative (Good for a more in-depth blog)**

* **Description:** 探索地球上各種生物的生命奧秘。動物學涵蓋從微生物到龐大的海洋生物，以及牠們的生理構造、行為模式、演化歷程，和與環境的互動。

* **Translation:** Exploring the mysteries of life of all creatures on Earth. Zoology encompasses everything from microbes to large marine creatures, as well as their physiology, behavioral patterns, evolutionary history, and interaction with the environment.
* **Reasoning:** More detailed and appealing, hinting at the broad scope of the subject. Helps readers understand the depth to which posts tagged will delve.

**Option 3: SEO-Friendly (Optimized for search engines)**

* **Description:** 學習動物與牠們的棲息地。 探索 動物生物學、行為學、分類學、生態學、動物演化等。 掌握動物世界的新知與發現，為您的觀看帶來更多樂趣。

* **Translation:** Learn about animals and their habitats. Explore animal biology, behavior, taxonomy, ecology, and the evolution of animals. Stay up-to-date with new knowledge and discoveries in the animal world, to enhance your viewing pleasure.
* **Reasoning:** The keywords are strategically placed, and also gives an idea of what the reader would get out of the tag. Includes a call to action, making it even more engaging!

**Option 4: Short & Catchy**

* **Description:** 動物學知識大揭秘！

* **Translation:** Animal Science Knowledge Revealed!
* **Reasoning:** Great for getting straight to the point to the user.

**How to choose:**

* **Consider your target audience:** Who are you writing for? Are they beginners, or already familiar with the subject?
* **Your blog’s focus:** What specific areas of animal science do you cover?
* **SEO goals:** Do you want to attract more search traffic? Use Option 3,
* **Overall style:** Does your blog have a more casual or academic tone?
* Choose the description that best reflects your content and audience! Remember to add keywords that are related to your blog!