Musnad Abu Ya'la al-Mawsili 153:216

Ubayd Allah narrated to us, Hammad bin Zayd narrated to us, Amr narrated to us, that Ibn Umar narrated that the Messenger of Allah (ﷺ) ordered the killing of dogs, except for a livestock dog or a hunting dog. It was said to Ibn Umar, "Abu Hurayrah says: 'Or a farm dog.'" He replied, "Indeed, Abu Hurayrah has a farm."