i would absolutely say there are other sapient species, we just don’t like to think of them as such. Obviously a lot of aquatic mammals come to mind, but I think there’s a very very good case to argue that cephalopods, elephants, some aquatic mammals, and some birds are sapient. Especially by sci-fi rules. I think there’s sufficient evidence to show that elephants, dolphins, and maybe corvids or cephalopods would pass the trial of Commander Data and be considered intelligent and sapient life.