There are multiple authors with this single name.
John Arne Sæterøy (born 16 May 1965 in Molde), better known by the pen name Jason, is a Norwegian cartoonist, known for his sparse drawing style and silent, anthropomorphic animal characters.
He has been nominated for two Ignatz Awards (2000: Outstanding Story and Outstanding Series, 2001: Outstanding Story and Outstanding Series), has received praise in Time, and won the Harvey Award for best new talent in 2002, and several Eisner Awards.
Source: Wikipedia.