Enforcement Rules of Animal Protection Article 9

The owner who has made registration according to the former two Articles (the Article 7 and Article 8) shall make registration for alteration to the original authority within one month of such event whilst changes his residence address or the feeding animal location, The foregoing shall apply to the animals which have been acquired or assigned registration.
中文原文 動物保護法施行細則第9條
依前二條規定辦理登記者,於飼主之住、居所變更或飼養動物之地點變更時,飼主應自事實發生後一個月內,向原登記機關辦理變更登記;取得或受讓已辦理登記之動物者,亦同。

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