How do we know that we are one of the few animals that can run long distance? We might be one of the three who HAVE, but that is only because we have attempted.

How do we know that we are one of the few animals that can run long distance? We might be one of the three who HAVE, but that is only because we have attempted. And one of the other two animals who has run long distance, a siberian husky, has only done it because humans forced him to. Where is the proof that other animals are physically unable to run long distance? Just because a horse doesn't drink the water does not mean he can't.