his introduction to cartooning was in high-school, where he took a class in that art form. early work was done for charles b. mintz (later screen gems), ub iwerks studio, and then on to walter lantz, where he began animation work. in 1935, he moved on to work for leon schlesinger at warner bros. where he spent about 30 years, first under tex avery's supervision, and then bob clampett in 1942.