Researchers can also search the Library of Congress Online Catalog by browsing subject headings in order to find more resources on this topic. Click “browse” and use the drop-down to select “SUBJECTS beginning with” or “SUBJECTS containing,” and then input a subject heading using one of the examples shown below. Finally, click on a result and you can browse the materials classified under that subject heading. Here are a few examples of possible subject headings:

• Animals--Law and legislation.
  • Animals--Law and legislation--[Country].
  • Animals--Law and legislation--[State].
  • Animals--Law and legislation--United States.
  • Animals--Law and legislation--United States--Cases.
• Animal welfare--Law and legislation.
  • Animal welfare--Law and legislation--[Country].
  • Animal welfare--Law and legislation--[State].
  • Animal welfare--Law and legislation--United States.
• Animal rights.
  • Animal rights--[Country].
  • Animal rights--[State].
  • Animal rights--United States.
• Dogs--Law and Legislation.
  • Dogs--Law and Legislation--[Country].
  • Dogs--Law and Legislation--[State].