'Probably Died Waiting for You to Do Your Lesson': Duolingo Says Its Mascot, Duo the Owl, Is Dead The language app posted the news on social media Tuesday. Previous Article 'Authenticity is Key': How Two-Time NBA Champion Jrue Holiday is Prioritizing Mental Fitness and Fashion With Rhone Next Article Using ChatGPT? AI Could Damage Your Critical Thinking Skills, According to a Microsoft Study