The elephant has a bigger brain, but it also has a much larger body it has to monitor and control which takes brain power. The sperm whale has an even bigger brain, and an even larger body.<p>It all comes down to the relative brainsize &#x2F; bodysize. This wikipedia article describes it: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Encephalization_quotient" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Encephalization_quotient</a>
And as you can see in that article, our quotient is far the highest of all animals. I find it weird that the authors of the article don&#x27;t mention these things and do not seem to be aware of this.