Sometimes adapting a beloved cartoon character into a spin-off feature film can take time. Mr. Peabody & Sherman have been around since the late '50s as part of the Bullwinkle and Rocky animated series.

Dreamworks has had a feature film centered on the time-traveling duo of genius dog Mr. Peabody and his adopted boy Sherman in the works since 2007. Seven years later, the project will finally arrive on the big screen as Mr. Peabody & Sherman gets a March 7, 2014 release.

We're sure to see a trailer or two soon from this family adventure movie, but until then here's the latest exclusive poster for the film. As you can see Mr. Peabody is getting into the Halloween spirit dressing up as George Washington. Click on the poster for a larger version. Check out another poster of Mr. Peabody in costume here.

Mr. Peabody & Sherman features the voices of Modern Family's Ty Burrell and Ariel Winter along with Stanly Tucci, Mel Brooks, Allison Janney, Leslie Mann and Stephen Colbert.

Are you looking forward to seeing the genius dog and his adopted boy Sherman travel through time?

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