[BroJoeK]

"Elephant brains are less dess than humans. "

Sometimes I feel very dense, other times light headed.
Neither condition seems to improve my IQ. ;-)

Neanderthal brains were about 10% larger than ours, on average.

The Boskop skull of this article shows a brain 25% larger than ours.

Elephants and whales have much larger brains:

So who is to say in which case brain-size alone indicates a higher form of intelligence?

[stormer]

You may want to explore brain size as a percentage of body mass.