Abdur Rahman bin 'Amr al-Awza'i عبد الرحمن بن عمرو أبو عمرو الأوزاعي · The Book of Hajj

"I saw the Messenger of Allah entering Ihram with his hair matted.

"The Prophet said: 'There are five kinds of animals for which there is no sin on the one who kills them, whether he is in Ihram or not: Mice, kites, crows, scorpions and vicious dogs.'"