It was narrated that Az Zuhri said: “Ibn As-Sabbaq said:
“Maimunah told me that Jibril, peace be upon him, said to the Messenger of Allah صلی اللہ علیہ وآلہ وسلم : ‘We (Angels) do not enter a house in which there is a dog or a picture.’ The next day the Messenger of Allah صلی اللہ علیہ وآلہ وسلم commanded that all dogs be killed, even small dogs.” (Sahih)