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In the 20th century the breed was nearly extinct, but five founder members of a newly formed Suid Afrikaanse Boerboeltelers Vereniging (SABT, in English: SABBA, South African Boerboel Association) started restoring the breed from the remaining full-blood Boerboels they could find in more remote areas were the dogs had not been subjected to random matings.
A search covering thousands of kilometers followed in August 1980 and different groups of dogs were identified. In the high-lying areas of the southern Free State and Kwazulu-Natal dogs were discovered that differed slightly from other dogs in the more north-western areas. For example, the dogs from the high-lying areas had longer hair, with thinner legs, smaller feet and sharper muzzles than those in the north-west.