There are many species of bats and I'm pretty sure dolphins use echo-location too. And I was thinking of the definition of "natural" as something made with a c

There are many species of bats and I'm pretty sure dolphins use echo-location too. And I was thinking of the definition of "natural" as something made with a certain degree of consciousness. For example, politics are natural, but political parties are man-made. Being paranoid is natural. Religion is not.