You know most of the cultures that survived to make it to space considered dogs to be companion animals.  Friends.  There were some that thought them unclean, but those didn’t make it that far.  And we had the Peloran example on cybers to go by.  So our gengineers did not create intelligent slaves.  They created friends.  Another race of humanity, of a sort.  Yeah, I grew up with dogs intelligent enough to know I wasn’t a god.  They’re still man’s best friend.