Both were once assumed to be absent in animals. Now we know it was a wrong assumption. There is very little that we have that other species do not. Larger brains is about all we have.
Larger brains dont help if most people keep just using a small part of it.
Everyone uses all their brain, if you are referring to the old claim that we only use 10%. It is not a good idea to make claims about brain use though when supporting communism.
I know that #LSD consumption activates large parts of the brain & that many people never use LSD so they miss out on this chance to grow consciousness: https://bit.ly/1qjEE1M