Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) reports this saying of the Prophet (peace and blessings be upon him): "Were it not that dogs are a particular kind of creation (a nation among the nations), I would have ordered every pitch-black dog to be killed. But kill the large-eyed ones among the dogs, for they are accursed and belong to the jinn."
Abu Ya'la, and al-Tabarani in al-Mu'jam al-Kabir and al-Mu'jam al-Awsat, recorded it, and its chain is hasan (good).