I asked about a version of the following sentence yesterday, but today my focus is different. Do you think "but" makes sense in the following sentences?
Gorillas have often been portrayed as a timid species, but in truth these shy apes constantly fight over sex, food, or territory.
I'd like to know what function the conjunction but serves in the sentence. Is it intended to debunk the notion that gorillas are timid? If so, wouldn't the purpose be defeated by the second clause acknowledging they are "shy apes," i.e. timid animals?