Duolingo, the language-learning app, killed off its owl mascot named Duo on Tuesday in what is assuredly some kind of publicity stunt. In fact, here were are writing about it. So, well played, Duolingo. Duolingo posted the news on social media.

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Language learning app Duolingo has revealed that after many years of pestering you to learn your lessons, their owl mascot Duo is dead. There is little information currently, but they said “Authorities are currently investigating” his cause of death.

Duo, Duolingo's popular owl mascot, has passed away suddenly. But what really happened to him and is he coming back?