Sahih Muslim | Book 7 | Hadith Number 2727

Narrated by Zaid b. Jubair
Zaid b. Jubair reported: A person asked Ibn 'Umar which beast a Mubrim could kill, whereupon he said: One of the wives of Allah's Apostle (may peace be upon him) told me: He (the Holy Prophet) commanded to kill voracious dog, rat, scorpion, kite, crow, and snake (and this is allowed) likewise in prayer.