system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do dogs like playing fetch with things? (Sticks, tennis balls, etc.)
gpt
It satisfies their instinctual urge to hunt something down and then pounce on it. Remember, wolves are powerful predators, and though we've bred most of that out of our cuddly friends, we can't get all of it.