You can use microchip information to identify a horse's previous owner or breeder. This usually can be done at a veterinary clinic or animal shelter. Furthermore, in some cases, DNA testing can help identify the horse's sire and dam. DNA testing is most effective for horses that have been bred multiple times by the same owners. DNA testing can also help trace a horse's lineage back to its breed of origin. You can use this information to recover the horse's pedigree.