Ibn ‘Umar said The Prophet ﷺ was asked as to which of the creatures could be killed by a pilgrim in the sacred state. He said there are five creatures which it is not a sin for anyone to kill, outside or inside the sacred area. The Scorpion, the Crow, the Rat, the Kite and the biting Dog. (Using translation from Abū Dāʾūd 1846)
سُئِلَ النَّبِيُّ ﷺ عَمَّا يَقْتُلُ الْمُحْرِمُ مِنَ الدَّوَابِّ؟ قَالَ خَمْسٌ لَا جُنَاحَ فِي قَتْلِهِنَّ عَلَى مَنْ قَتَلَهُنَّ فِي الْحَرَمِ الْعَقْرَبُ وَالْفَأْرَةُ وَالْغُرَابُ وَالْحِدَأَةُ وَالْكَلْبُ الْعَقُورُ