Q: Why are some animals suffering in this world? Some animals just live in the middle of sadness and pain and die a painful death. And finally they just become dust and disappear after death. I don't mean the animals that we slaughter by the law of Allah Ta'ala, or animals that are killed by other animals by law of nature which law Allah Ta'ala gave them. I mean those animals that are abused by heartless people.
For example, I often see some people throw stones at dogs, or some pet shop owner's kill unsold cats, or some cow herders hit their cows with a stick strongly, etc.
Will these animal's suffering pay off someday by Allah Ta'ala? If "Yes" then I would like to know when and how?