Evil behaviour
وَ رَوَى الطَّحَاوِيُّ عَنْ يَزِيدَ بْنِ أَبِي نُعَيْمٍ أَنَّهُ سَأَلَ أَبَا سَعِيدٍ الْخُدْرِيَّ لِمَ سُمِّيَتِ الْفَأْرَةُ فُوَيْسَقَةً قَالَ اسْتَيْقَظَ النَّبِيُّ ص ذَاتَ لَيْلَةٍ وَ قَدْ أَخَذَتْ فَأْرَةٌ فَتِيلَةَ السِّرَاجِ لِتُحْرِقَ عَلَى رَسُولِ اللَّهِ ص الْبَيْتَ فَقَامَ ص إِلَيْهَا وَ قَتَلَهَا وَ أَحَلَّ قَتْلَهَا لِلْحَلَالِ وَ الْمُحْرِمِ
And it is reported by Al Tahawy, from Yazeed Bin Abu Nueym,
He asked Abu Saeed Al-Khudry, ‘Why has the mouse been named as ‘فُوَيْسَقَةً ’ ‘Fuweysaqa’?’ He said, ‘One night the Prophet-saww woke up suddenly and a mouse had taken a wick of the lamp in order to burn the house upon Rasool-Allah-saww. He-saww stood up and killed it and legalised killing it to the one not in Ihraam and the one in Ihraam’.[1] (From a Riwaya)
[1] Bihar Al-Anwaar – V 61 The book of animals – Ch 10 H 7