Instructions
Go through reputable resources before you buy a horse. Check with veterinarians and other animal experts if you're unfamiliar with horse buying and bloodlines. Look into standards set by national horse organizations, such as the American Quarter Horse Association. Note also that many of these organizations have a classified section included on their Web sites.
Keep in mind that pedigree horses come with papers. Check with horse experts and organizations to learn how to determine if pedigree papers are authentic. Research a horse's bloodline on your own by checking its pedigree listed in descriptions on horse organization Web sites, especially if the horse is listed in the classifieds.
Pay attention to the horse's real name, even if it goes by a nickname. Nicknames are commonly used, so always ask for the pedigree name. Look for breeding clues in the pedigree name, such as part of the sire's (same as father) name included in the horse's name.
Look at the horse's pedigree papers ultimately for authenticity of a bloodline. Research a horse's bloodline based on those documents by learning about the horse's sire and dam and beyond. You should be able to trace back a few generations. Investigate using databases such as Pedigree Online All Breed Database to find detailed information.
How to Research a Horse's Bloodline
Trainers and other horse experts know that breeding can make a big difference when it comes to winning competitions. Horses from certain bloodlines are often easier to train. For instance, cutting horses, once used to herd ranch cattle, have a natural cow instinct. These types of horses today are used in cutting horse competitions. Research a horse's bloodline, especially if you plan to show or race it.