Common Dwarf Mongoose Helogale parvula is usually portrayed in the published literature as a wholly ground-dwelling mongoose, poorly adapted to climbing trees. Records from three sites show that, in some habitats, Mongooses do make good use of trees, including for denning purposes, although it remains unclear why trees are used for denning when other preferred den sites such as termitaries are available. Keywords: arboreal, density, Herpestidae, terrestrial.