What does Islam say about cruelty to animals?

In the Qur'an it says: There is not an animal on earth, nor a bird that flies on its wings, but they are communities like you... Qur'an 6:38 Muslims believe that: all living creatures were made by Allah Allah loves all animals animals exist for the benefit of human beings animals must be treated with kindness and compassion Muslims are instructed to avoid: treating animals cruelly over-working or over-loading animals neglecting animals hunting animals for sport hunting for food is permitted if the animals are killed humanely cutting the mane or tail of a horse animal fighting as a sport factory farming Using animals is permitted The Qur'an explicitly states that animals can be used for human benefit. It is God who provided for you all manner of livestock, that you may ride on some of them and from some you may derive your food. And other uses in them for you to satisfy your heart's desires. It is on them, as on ships, that you make your journeys. Qur'an 40:79-80 Muhammad and animals There are many stories and sayings of the Prophet that demonstrate his concern for the welfare of animals. Once someone travelling with the Prophet took some eggs from a nest, causing the mother bird great grief. The Prophet saw this and told the man to return the eggs. When the Prophet was asked if Allah rewarded acts of charity to animals, he replied: 'Yes, there is a reward for acts of charity to every beast alive.' The Prophet said "Whoever kills a sparrow or anything bigger than that without a just cause, Allah will hold him accountable on the Day of Judgment." The Prophet explained that a killing would be for a just cause if it was for food.