For state statutes governing animal issues, the Animal Legal Defense Fund regularly updates its compilation of state statutes in a publication titled Animal Protection Laws of the United States of America & Canada. The most recent edition (8th ed.) was published in 2013 and is available for download at http://aldf.org/resources/advocating-for-animals/animal-protection-laws-of-the-united-states-of-america-and-canada/.
Animal welfare legislation from various countries can be found scattered across various websites. The "World Materials" page of the Animal Legal and Historical Center is one example of a site that collects laws from several countries. Below is a list of national laws on animal welfare that are written in English, have been translated into English, or have English summaries. Please note how current the laws below are, will vary from jurisdiction to jurisdiction, so they are best thought of as a starting point to be updated by further research.
University of the Western Cape,
Robert Sobukwe Road,
Bellville,
7535
Tel: 021 959 2946