Stock photography, photos: Marten portrait Stock photos of Marten looking out off hollow tree Photograph: © Dick J.C. Klees Click for a larger image and more information Keywords associated with this stock photo: carnivore, mammal, mustelid, mustelidae, USA, U.S.A., American, forest,Martes americana, marten, martes, portrait, curious, Pine marten, American pine marten, ears,