The Catalburun is a Turkish pointer known for its distinct double nose. It was believed that this unusual nasal structure gave the breed an advantage in hunting because of an extra sensitivity to smells. But breeders have since realized that the divided nose is just a cosmetic feature and offers no real edge over a typical canine sniffer, says Craig Koshyk, author of "Pointing Dogs."
Because the characteristic can lead to a seriously cleft palate, some breeders are no longer finding the double nose a positive trait and have stopped breeding for the characteristic. The breed's name in Turkish is derived from "catal" meaning fork and "burun" meaning nose.