A male what?
Horse
So I guess it's unattainable...
haha omg
Male silver back gorillas are natural, aren't they? In that case, it's attainable for them.
But even for them not at that bodyfat-%.
Depends on how you define 'natural'. To me, a person is natural as long as he/she doesn't fail a drug test. Therefore, with no testing, everyone is 'natural'.