You know, the most dumbest person is still smarter than a pigeon, or a chicken.

So you don’t need to be smart or strong in order to survive in this world.

All you need to do is adapt. So the best animals are who are capable of adaption – it’s not intelligence or strenght.

All those who can’t adapt – will be eventually dead.

Weak animals naturally die (at least in the wilderness). So, sure – you have to posses some strength, but you don’t have to be the strongest. Although, it helps.