Five are the harmful things which should be killed in the state of Ihram or otherwise: snake, speckled crow. rat. voracious dog, and kite.
Sahih Muslim Book 15, Hadith 72
← Previous Hadith I heard Allah's Messenger (ﷺ) as saying: Four are the vicious (birds, beasts and reptiles) which should be killed in the state of Ihram or otherwise: kite (and vulture), crow, rat, and the voracious dog. I (one of the narrators, `Ubaidullah b. Miqsam) said to Qasim (the other narrator who heard it from `A'isha): What about the snake? He said: Let it be killed with disgrace.

Sahih Muslim Book 15, Hadith 71 Next Hadith → Five are the vicious beasts which should be killed even in the state of Ihram: scorpion, rat, kite, crow and voracious dog.

Sahih Muslim Book 15, Hadith 73