Foreign Law Guide (library subscription): Database of Foreign National Law
Use Subject Heading: Animals and Animal Welfare
MSU Animal Legal and Historical Center good for finding translated law, both statutes and cases, and journal articles for a selection of countries. Under the Search Materials tab, choose a Topic then choose a Country.
N-Lex (a common gateway to the national law of EU countries)
World Legal Information Institute: includes primary law and some access to commentary or journals.
World Law Guide: Links to legislation and courts of many countries of the world.
Guide to Law Online: Law Library of Congress Guide to finding law from other countries.