Why GOD or Nature had been so Cruel for weak animals in Forest and this world?

Nature or whatever God is did nothing. They're excuses. If you're a vegetarian then I suggest you start using your brain and look at the reality of things. I mean, just basing your curiosity on a "point" system for public opinion limits others' interpretation, not to mention your own. Everything that lives, dies. Why is that not a point system? Animals are not the only things that become pray, neither are humans. Plants do, in fires, storms and human plucking. Trees help all things that live breathe, yet we cut them down to make houses and build fire for warmth. And when it comes down to weak and strong, look at the damn snakes, they can swallow an entire goat, a creature that can kill them by just stepping on them. Spiders frieghten the **** out us humans, and we are over 900% their height. If I were you, I would not worry about something like this. What does it accompolish? It tries to make one human's opinion weaker than another. It does nothing at all.