Fatwa: 6829-0002
Question:
My cat is suffering from cancer. The vet has explained that it would be possible to operate on the cat but the recovery will be painful and there is no guarantee of the cancer not returning. My cat is also aged. Is it permissible to put down the cat?
Answer:
In the Name of Allāh, the Most Gracious, the Most Merciful.
In the enquired scenario it would be permissible to put the cat to sleep and end its life.
And Allāh Taʿālā knows best.
الفتاوى العالمكيرية = الفتاوى الهندية 5/ 361
وكذا الحمار إذا مرض ولا ينتفع به فلا بأس بأن يذبح فيستراح منه كذا في الفتاوى العتابية