Species composition and ecological studies of small mammals were carried out in AlatishrnProposed National Park, Quara Woreda, North Gondar Zone, Amhara National Regional Staternfrom August 2004 to March 2005. The four habitat types were grouped under wooded grassland,rnwoodland, riverine woodland and mixed bamboo woodland. Nine representative trapping gridsrnwere randomly selected from the four habitats for live trapping. In addition, three special traprnsites were also incorporated. These trapping sites yielded 29 species of small mammals as a newrnrecord for the area. These comprised, 370 small mammals that included 23 rodent and 6rninsectivore species. Of these, three rodent species (Murid sp.A Murid sp. B and Acomys sp. A)rnand a shrew (Soricid sp. A) await for further taxonomic work to be considered as a new species.rnThe trapped rodent species were Arvicanthis dembeensis, Arvicanthis niloticus, Desmomysrnharringtoni, Mastomys natalensis, Mastomys erythroleucus, Myomys albipes, Acomys cahirinus,rnAcomys wilsoni, Acomys cineraceus, Mus musculus, Mus tenellus, Lemniscomys barbarus,rnTatera robusta, Tatera valida, Tatera phillipsi, Euxerus erythropus, and the yet to be identifiedrnrodents, Murid sp. A, Murid sp. B and Acomys sp. A. The trapped insectivore species werernCrocidura flavescent, Crocidura turba, Crocidura fumosa, Crocidura smithi, Atelerix albiventrisrnand the yet to be identified shrew, Soricid sp. A. In addition to these, four rodent species Hystrixrncristata, Paraxerus ochraceus, Heliosciurus gambianus and Xerus rutilus were alsornobserved.The endemic rodent species of the Ethiopian higland forest (M. albipes and D.rnharringtoni) were recorded in APNP outside their former altitudinal limits and geographicalrnranges. Similary, the three highland diwelling shrews (C. flavescens, C. turba, and C. fumosa)rnwere also recorded outside from their altitudinal limit and geographic range in the country. Thernoccurrence of M. albipes and D. harringtoni from the Ethio-Sudan border trapping gridsrnindicates the possibility of these species expanding their ranges to the neighbouring country.Variation in species number between seasons was insignificant. However the dry season traprnsuccess was significantly high. Differences in the diversity of species among habitats werernhighly significant (X23=19.5, P< 0.001). Wooded grassland habitats yielded more number ofrnspecies than others. The number of species captured in different grids of each habitat showedrngreat variation. Seasonal migration of small mammals among habitats was clearly observed.rnDuring the wet season, migration to the wooded grassland was common. These revert back to thernother three habitats during the dry season. During the dry season forest fire, excessive grazingrnand lack of water and during the wet season flooding, humid and moist microhabitats were thernmajor reasons for the seasonal movements. Breeding in most small mammalian species of APNPrnwas seasonal and seemed to be associated with rainfall. 70% of the rodent species of APNP werernimportant components of diets for the indigenous Gumuz people living surrounding the park area.rn41% of the small mammals obtained in the APNP are pests. 31% of the total species movernbetween villages and the park area. These were considered notorious pests. The high diversity ofrnsmall mammals coupled with less number of settlers in the area should enhance the idea ofrnproclaiming it as a conservation centre.