Why is a ehephent so big is it just big or are we so small?

It's bigger than us, for a human, we're the right size, for an elephant, it's the right size.

Elephants evolved to their current size over the course of tens of millions of years; this size adaptation is likely a survival mechanism because a full-sized, adult elephant faces very little threat from predators, though baby elephants are much more vulnerable to predation from big cats such as lions and wild dogs. There have been cases in which adult elephants have fallen victim to attack from big cats, but these cases are rare. The elephant is the largest known land animal, but scientists believe that this massive mammal evolved from a creature that is roughly the size of a small rodent.