Double-nosed Pointers are a type of gundog that have the unusual feature of a split or double nose. It is believed that this unusual nose gives this dog extra sensitivity to smells, a primary reason it was chosen as a hunting dog. It appears to be a normal dog's nose, but with the nostrils separated by a band of skin and fur dividing the nose all the way to the dog's upper lip.
Breeds
References
Double-nosed Pointers Wikipedia(Text) CC BY-SA