After finishing school, Wagenbauer attended drawing classes in Munich, under Johann Jakob Dorner the Elder (1741-1813).
He served in the military from 1797 to 1801, receiving a royal artist's annuity after his service through the influence of Johann Christian von Mannlich (1741-1822), architect and general building director of the dukes of Zweibrücken.
He developed his own methodology where he combined careful observation with detailed study of nature, which became the cornerstones of his depictions of landscape.
His paintings extolled the beauty of the Bavarian landscape, and inspired by Adriaen van de Velde and Paulus Potter, he produced a large number of animal studies.
Wagenbauer also focused significantly on painting animals, a genre in which the influences of such artists as Adriaen van de Velde and Paulus Potter were evident.