In search of the African wild dog:

Arguable the most successful hunter in Africa, the African wild dog, ironically finds itself on the brink of extinction. Part of the Canidae family, and sharing a general similarity with the various canids worldwide, the African wild dog differs fundamentally from other canids: it belongs to the genus, Lycaon, which formed a new branch on the family tree some 3 million years back and subsequently evolved independently. Today it is the only survivor of this unique line and, because of its genetic difference, is unable to interbreed with any of its canid relatives or even with the domestic dog. Previously found in diverse habitats across the continent, it has tragically disappeared from much of its former range. Today there are only an estimated 3,000 to 5,500 wild dogs left in the whole of Africa, a mere 500 of which occur in South Africa. In spite of, or perhaps because of, the elusive nature of the wild dogs and their limited population numbers, Roger and Pat have produced their best book yet.