Maliks Muwatta Book 20, Hadith Number 91.

Section : Animals that Someone in Ihram can Kill.

Yahya related to me from Malik from Hisham ibn Urwa from his father that the Messenger of Allah, may Allah bless him and grant him peace, said, “There are five trespassers that can be killed in the Haram| rats and mice, scorpions, crows, kites and wild dogs.”