This hadeeth comes under the following chapter: COMMAND OF KILLING DOGS AND THEN ITS ABROGATION, AND PROHIBITION OF KEEPING THEM BUT FOR HUNTING AND PROTECTION OF LANDS OR CATTLE OR LIKE THAT
Abdullah (b. Umar) (Allaah be pleased with them) reported: Allaah's Messenger (sallAllaahu alayhi wa sallam) ordered the killing of dogs and we would send (men) in Medina and its corners and we did not spare any dog that we did not kill, so much so that we killed the dog that accompanied the wet she-camel belonging to the people of the desert.