Talya Eden Testing Bounded Arboricity Abstract: In this paper we consider the problem of tolerantly testing whether a graph has bounded arboricity. The family of graphs with bounded arboricity includes, among others, bounded-degree graphs, all minor-closed graph classes (e.g. planar graphs, graphs with bounded treewidth) and randomly generated preferential attachment graphs. The sparse-graphs model allows access to degree queries and neighbor queries, and the distance is defined with respect to the actual number of edges. Our algorithm distinguishes between graphs that are -close to having arboricity and graphs that are -far from having arboricity at most , for some small absolute constant .