The authority on brands in your area is the local brand inspector. If you think a horse came from a different area you can contact the brand inspection board for the state that you are interested in. These professionals have the records that they can check to find out who owns the brand in question. Also, if you find a strayed animal, the brand inspector can find the correct owner. Conversely, if you lose an animal you should contact the local brand inspector with the brand and description of the lost animal.
Answers appear on page two of livestock brands.
The first step in protecting your livestock is choosing a good brand. Choose a brand that is distinctive and readily recognized. Your state's brand inspector's office will help you to select a brand that has your desired qualities within the limits imposed by current brand laws. Be sure to record your chosen brand in your state's brand inspection office. Unrecorded brands offer little or no protection and add confusion.