Naming of Haflingers must follow the traditional method: a male foal's name must begin with the same letter as the name of its sire; a filly foal's name must begin with the same letter as the name of its dam. There are 7 (only) stallion lines: A, B, M, N, S, ST, and W. Names of horses may not exactly duplicate any name already recorded by AHR. Names may not exceed 26 spaces including suffixes and spaces between words. Suffixes may only be used in the original naming of a foal and the first AHR recording of an imported animal. Inclusion of another owner's suffix, either foreign or AHR, in the name of a horse is not permitted. Use of suffixes in the name is optional to the owner. Name changes, except in the case of proven error, are not permitted.