Road Traffic Management and Penalty Act Article 84

In the event of poultry, livestock, or pets running on roadways without properly care and thereby impeding traffic, the owner or persons responsible shall be fined from NT$300 to NT$600.
中文原文 道路交通管理處罰條例第84條
疏縱或牽繫禽、畜、寵物在道路奔走,妨害交通者,處所有人或行為人新臺幣三百元以上六百元以下罰鍰。

English translation for reference only; the Chinese text prevails. Not legal advice.