Sahih Muslim Book 7, Hadith Number 2725.

Chapter : Which animal the Muhrim and the non-Muhrim are permitted to kill in the state of Ihram at the conclusion of it (within the precincts of the Ka’ba).

Hafsa, the wife of Allah’s Apostle (may peace be upon him), reported Allah’s Messenger (may peace be upon him) having said this: There are five beasts, all of them are vicious and harmful and there is no tin for one who kills them (and these are): scorpion, crow, kite, rat and voracious dog.