Here are a few options for a WordPress post_tag description for “心絲蟲” (Heartworm) in Traditional Chinese, depending on the audience and content of your posts:

**Option 1: Concise & Informative (General Audience)**

> 心絲蟲 (Heartworm) 是一種危險的寄生蟲，會感染犬隻和貓咪的心臟與肺動脈。了解心絲蟲的徵兆、預防方法與治療方案，保護您的愛寵健康。

> *Translation:* Heartworm is a dangerous parasite that infects the hearts and pulmonary arteries of dogs and cats. Learn about the signs, prevention methods, and treatment options for heartworm to protect the health of your beloved pets.

**Option 2: Focus on Disease & Prevention (Pet Owners)**

> 關於心絲蟲的資訊：了解心絲蟲病是如何傳播的？有哪些症狀？如何預防和治療？ 讓您的毛孩遠離心絲蟲的威脅。

> *Translation:* Information about Heartworm: Learn how heartworm disease is spread? What are the symptoms? How to prevent and treat it? Keep your furry friend safe from the threat of heartworm.

**Option 3: More Detailed (Veterinary or Educational Content)**

> 心絲蟲病是一種由犬惡絲蟲（Dirofilaria immitis）引起的嚴重疾病，主要在犬隻和貓咪身上發生。本標籤涵蓋了心絲蟲的生命週期、感染途徑、診斷、治療方法以及預防策略，包括定期驅蟲和藥物。

> *Translation:* Heartworm disease is a serious illness caused by Dirofilaria immitis, primarily affecting dogs and cats. This tag covers the life cycle of heartworm, the routes of infection, diagnosis, treatment methods, and prevention strategies, including regular deworming medication.

**Option 4: Simple & Direct (For Quick Tagging)**

> 心絲蟲病的相關資訊與防治。

> *Translation:* Information and Control of Heartworm Disease.

**Choosing the Best Option:**

* **Consider your audience:** Are you writing for pet owners, veterinarians, or a more general audience?
* **Content of your posts:** Will your posts be about symptoms, prevention, treatment, or a combination?
* **Tagging Strategy:** Are you aiming for a broad tag that encompasses various aspects of heartworm, or would you be using it in conjunction with more specific tags (e.g., `心絲蟲症狀` – Heartworm Symptoms, `心絲蟲預防` – Heartworm Prevention)?

No matter which option you choose the descriptions should be around 10-30 words, and it directly relate to the current post. Aim for clarity and usefulness. And ensure the language is appropriate for your target audience’s level of understanding.