أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ عَمْرٍو، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم أَمَرَ بِقَتْلِ الْكِلاَبِ إِلاَّ كَلْبَ صَيْدٍ أَوْ كَلْبَ مَاشِيَةٍ ‏.‏

It was narrated form Ibn 'Umar that: the Messenger of Allah commanded that all dogs be killed except dogs used for hunting or herding livestock. Translation Not Available

Book Ref: Sunan An Nisai Book 42 Hadith 4279
Web Ref:  Sunan An Nisai Vol 5 Book 42 Hadith 4284