It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "Were it not that dogs are a nation among the nations, I would have ordered that every pure black dog be killed. So kill that (marked) dog among the dogs, for it is the accursed one among the jinn."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11929