Messenger of Allah ﷺ said, "While a man was walking he felt thirsty and went down a well and drank water from it. On coming out of it, he saw a dog panting and eating mud because of excessive thirst. The man said, 'This (dog) is suffering from the same problem as that of mine. So he (went down the well), filled his shoe with water, caught hold of it with his teeth and climbed up and watered the dog. Allah thanked him for his (good) deed and forgave him." The people asked, "O Messenger of Allah ﷺ! Is there a reward for us in serving (the) animals?" He replied, "Yes, there is a reward for serving any animate."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ بَيْنَا رَجُلٌ يَمْشِي فَاشْتَدَّ عَلَيْهِ الْعَطَشُ فَنَزَلَ بِئْرًا فَشَرِبَ مِنْهَا ثُمَّ خَرَجَ فَإِذَا هُوَ بِكَلْبٍ يَلْهَثُ يَأْكُلُ الثَّرَى مِنَ الْعَطَشِ فَقَالَ لَقَدْ بَلَغَ هَذَا مِثْلُ الَّذِي بَلَغَ بِي فَمَلأَ خُفَّهُ ثُمَّ أَمْسَكَهُ بِفِيهِ ثُمَّ رَقِيَ فَسَقَى الْكَلْبَ فَشَكَرَ اللَّهُ لَهُ فَغَفَرَ لَهُ قَالُوا يَا رَسُولَ اللَّهِ وَإِنَّ لَنَا فِي الْبَهَائِمِ أَجْرًا قَالَ فِي كُلِّ كَبِدٍ رَطْبَةٍ أَجْرٌ  

The Prophet ﷺ said, "While a dog was going round a well and was about to die of thirst, an Israeli prostitute saw it and took off her shoe and watered it. So Allah forgave her because of that good deed."  

قَالَ النَّبِيُّ ﷺ بَيْنَمَا كَلْبٌ يُطِيفُ بِرَكِيَّةٍ كَادَ يَقْتُلُهُ الْعَطَشُ إِذْ رَأَتْهُ بَغِيٌّ مِنْ بَغَايَا بَنِي إِسْرَائِيلَ فَنَزَعَتْ مُوقَهَا فَسَقَتْهُ فَغُفِرَ لَهَا بِهِ