In an elaborate marketing campaign this month, Duolingo seemingly killed its viral green owl mascot in every country but one.

Duo was fatally hit by a Tesla Cybertruck, the language-learning company announced this week. The snarky owl has been the ...

Duolingo’s owl mascot, formally known as The Duolingo Owl, made a surprise return Feb. 24, nearly two weeks after the language learning app shocked the world with the announcement of his “death.” ...