The owl is watching.

A saturated cartoon lesson board with chunky rounded type, press-shadow buttons, and one mascot who refuses to let your streak go cold.

Start the lesson

Protect streak

You missed yesterday. I noticed.

This is the Duolingo Green Owl Mascot design system, applied by Curio Design — a design-style library for AI agents. Full Duolingo Green Owl Mascot guide → designbycurio.com/learn/duolingo-green-owl-mascot