"There are five (animals) for which there is no sin on the Muhrim if he kills them: Crows, kites, scorpions, mice and vicious dogs."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ خَمْسٌ لَيْسَ عَلَى الْمُحْرِمِ فِي قَتْلِهِنَّ جُنَاحٌ الْغُرَابُ وَالْحِدَأَةُ وَالْعَقْرَبُ وَالْفَأْرَةُ وَالْكَلْبُ الْعَقُورُ