This study aimed at estimating the population size and attitudes of residents towards caring for domestic dogs, through questionnaire surveys, as well as the frequency of these animals in different habitats (anthropic and forest patch), using scent stations. The study was conducted in a severely fragmented area of the Brazilian Atlantic Forest. A large number of unrestricted dogs was recorded, averaging 6.2 ind/kmsup2/sup. These dogs have owners and are regularly fed. Dog records decreased from the anthropogenic matrix to the forest patch edge, which suggests that dogs act as an edge effect on forest patches. Encounters between domestic dog and wild animals can still be frequent in severely fragmented landscapes, mainly at the forest edges. However the fact that most dogs have an owner and are more frequent in the anthropic habitat suggests that their putative effects are less severe than expected for a carnivore of such abundance, but the reinforcement of responsible ownership is needed to further ameliorate such effects.704987994Becker, M., Dalponte, J.C., (1991) Brazilian Wild Mammals' Tracks: A Field Guide, p. 180. , Brasília, DF: Editora UNBBrooks, R., Survey of the dog population of Zimbabwe and its level of rabies vaccination (1990) Veterinary Record, 127 (24), pp. 592-596Butler, J.R.A., Birgham, J., Demography and dog-human relationships of the dog population in Zimzabwean communal lands (2000) The Veterinary Record, 147, pp. 442-446Butler, J.R.A., Du, T.J.T., Diet of free-ranging dogs (Canis familiaris) in rural Zimbabwe: Implications for wild scavengers on the periphery of wildlife reserves (2002) Animal Conservation, 5, pp. 29-37Campos, C.B., Esteves, C.F., Ferraz, K.M.P.M.B., Crawshaw, P.G., Verdade, L.M., Diet of free-ranging cats and dogs in a suburban and rural environment, south-eastern Brazil (2007) Journal of Zoology, 273, pp. 14-20Canty, A., Ripley, B., (2005) Bootstrap R (S-Plus). Functions (Canty), 1, pp. 2-23. , R package versionCrooks, K., Relative Sensitivities of Mammalian Carnivores to Habitat Fragmentation (2002) Conservation Biology, 16 (2), pp. 488-502Crooks, K.R., Soulé, M.E., Mesopredator release and avifauna extinctions in a fragmented system (1999) Nature, 400 (6744), pp. 563-566Daniels, T.J., Bekoff, M., Spatial and temporal resource use by feral and abandoned dogs (1989) Ethology, 81, pp. 300-312Duran, J.C., Cattan, P.E., Yanez, J.L., Food-habits of foxes (Canis sp.) in the Chilean National Chinchilla Reserve (1987) Journal of Mammalogy, 68 (1), pp. 179-181Eisenberg, J.F., O'Connel, M.A., August, P.V., Density, productivity and distribution of mammals in two Venezuelan habitats (1979) Vertebrate Ecology In the Northern Neotropics, pp. 187-207. , EISENBERG, JF, Washington, D.C.: Smithsonian Institution PressFacure, K.G., Monteir-Ofilho, E.L.A., Feed habits of the crab-eating fox, Cerdocyon thous (Carnivora, Canidae), in a suburban area of southeastern Brazil (1996) Mammalia, 60, pp. 147-149Fiorello, C.V., Noss, A.J., Deem, S.L., Demography, hunting ecology, and pathogen exposure of domestic dogs in the Isoso of Bolivia (2006) Conservation Biology, 20 (3), pp. 762-771Galetti, M., Sazima, I., Impact of feral dogs in an urban Atlantic Forest fragment in southeast Brazil (2006) Natureza E Conservação, 4 (1), pp. 146-151Gavgani, A.S.M., Mohite, H., Edrissian, G.H., Mohebali, M., Davies, C.R., Domestic dog ownership in Iran is a risk factor for human infection with Leishmania infantum (2002) American Journal of Tropical Medicine and Hygiene, 67 (5), pp. 511-515(2000) Fundação Instituto Brasileiro De Geografia E Estatística, , http://www.ibge.gov.br, IBGE, Censo 2000. Available fromJenkinson, S., Wheater, C.P., The influence of public access and sett visibility on badgers (Meles meles) sett disturbance and persistence (1998) Journal of Zoology, 246, pp. 478-482Kitala, P., McDermott, J., Kyule, M., Gathuma, J., Perry, B., Wandeler, A., Dog ecology and demography information to support the planning of rabies control in Machakos District, Kenya (2001) Acta Tropica, 78, pp. 217-230Lacerda, A.C.R., (2002) Análise De Ocorrência De Canis Familiaris No Parque Nacional De Brasília, , Influência da Matriz, Monitoramento e Controle. Brasília, DF: Universidade de Brasília. [Dissertação de Mestrado]Lacerda, A.C.R., Tomas, W.M., Marinho-Filho, J., Domestic dogs as an edge effect in the Brasília National Park, Brazil: Interactions with native mammals (2009) Animal Conservation, 12, pp. 477-487Maffei, L., Taber, A.B., Distribution, natural history and conservation of neotropical mammals (2003) Journal of Neotropical Mammalogy, Vol. vol10/vol, (1), pp. 154-160Manly, B.F., (1997) Randomization, Bootstrap and Monte Carlo Methods In Ecology, , London: Chapman and HallMarinho-Filho, J.S., Rodrigues, F.H.G., Guimarães, M.M., Mammals from Águas Emendadas Ecological Station (1998) Vertebrates of Águas Emendadas Ecological Station, pp. 34-63. , In MARINHO-FILHO, JS., RODRIGUES, FHG. and GUIMARÃES, MM. (Eds.), Brasília, DF: SEMATEC/IEMAMonteiro-Filho, E.L.A., Mammals from Santa Genebra (1995) Conservation Ecology of a Urban Tropica Forest, Santa Genebra Reserve, pp. 86-92. , In MORELLATO, LPC. and LEITÃO-FILHO, HF. (Eds.), Campinas, SP: Editora UnicampMorellato, L.P.C., Haddad, C.F.B., (2000) Introduction: The Brazilian Atlantic Forest. Biotropica, Vol. 32, 4 B, pp. 786-792Motta-Junior, J.C., Lombardi, J.A., Talamoni, S.A., Notes on crab-eating fox (Dusicyon thous) seed dispersal and food habits in southeastern Brazil (1994) Mammalia, 58, pp. 156-159Navin, T.R., Sierra, M., Custodio, R., Steurer, F., Porter, C.H., Ruebush, T.K., Epidemiologic study of visceral leishmaniasis in Honduras, 1975-1983 (1985) American Journal of Tropical Medicine and Hygiene, 34 (6), pp. 1069-1075Neal, E.G., Cheeseman, C., (1996) Badgers, , London: T. and A.D. PoyserNesbitt, W.H., Ecology of a feral dog pack on a wild refuge (1975) The Wild Canids, pp. 391-395. , In FOX, MW. (Ed.), New York: Van Nostrand ReinholdOliveira, V.B., Linares, A.M., Côrreia, G.L.C., Chiarello, A.G., Predation on the capuchin monkey Cebus nigritus (Primate: Cebidae) by domestic dog Canis lupus familiaris (Carnivora: Canidae), in the Parque Estadual Serra do Brigadeiro (2008) Revista Brasileira De Zoologia, 25 (2), pp. 276-278Ortega-Pacheco, A., Rodriguez-Buenfil, J.C., Boliogo-Nzales, M.E., Sauria-Rceo, C.H., Jiménez-Coelho, M., Forsberg, C.L., A survey of dog populations in urban and rural areas of Yucatan, Mexico (2007) Anthrozoos, 20 (3), pp. 261-274Pardini, R., Ditt, E.H., Cullen, L., Bassi, C., Rudran, R., Rapid survey on medium and large terrestrial mammals (2003) Study Methods In Conservation Biology and Wildlife Management, pp. 181-201. , CULLEN, L., RUDRAN, R. and PADUA, CV. (Orgs.), Curitiba: Editora UFPRPassamani, M., Ribeiro, D., Small mammals in a fragment and adjacent matrix in southeaster Brazil (2009) Brazilian Journal of Biology, 69 (2), pp. 305-309(2006) R: A Language and Environment For Statistical Computing, , http://www.R-project.org, R DEVELOPMENT CORE TEAM, Vienna, Austria: R Foundation for Statistical Computing, Available fromReithinger, R., Espinoza, J.C., Llano-Scuentas, A., Davies, C.R., Domestic dos ownership: A risk factor for human infection with Leishmania (Viannia) species (2003) Transactions of the Royal Society of Tropical Medicine and Hygiene, 97, pp. 141-145Revilla, E., Palomares, F., Delibes, M., Edge-core effects and the effectiveness of traditional reserve conservation: Eurasian badgers in Doñana National Park (2001) Conservation Biology, 15, pp. 148-158Srbek-Araujo, A.C., Chiarello, A.G., Is camera-trapping an efficient method for surveying mammals in Neotropical forests? A case study in south-eastern Brazil (2005) Journal of Tropical Ecology, 21, pp. 121-125Srbek-Araujo, A.C., Chiarello, A.G., Domestic dogs in Atlantic forest preserves of south-eastern Brazil: A camera-trapping study on patterns of entrance and site occupancy rates (2008) Brazilian Journal of Biology, 68 (4), pp. 771-779Thomson, P.C., Rose, K., Kok, N.E., The behavioral ecology of dingos in north-western Australia. 5. Population-dynamics and variation in the social system (1992) Wildlife Research, 19 (5), pp. 65-584Vernes, K., Dennis, A., Winter, J., Mammalian diet and broad hunting strategy of the dingo (Canis familiaris dingo) in the wet tropical rain forests of northeastern Australia (2001) Biotropica, 33 (2), pp. 339-345Viana, V.M., Tabanez, A.A.J., Batista, J.L.F., Dynamics and Restoration of Forest Fragments in the Brazilian Atlantic Moist Forest (1997) Tropical Forest Remnants: Ecology, Management, E Conservation of Fragmented Communities, pp. 151-165. , In LAURANCE, WF. and BIERREGAARD, RO. (Eds.), Chicago: The University of Chicago PressWang, Y., He, T., Wen, X., Li, T., Waili, T.T., Zhang, W., Zhou, H., Craig, P.S., Human cystic echinococcosis in two Mongolian communities in Hobukesar (China) and Bulgan (Mongolia) (2005) Transactions of the Royal Society of Tropical Medicine and Hygiene, 99, pp. 692-698Whiteman, C.W., Matushima, E.R., Confalonieri, U.E.C., Palha, M.D.C., Silva, A.S.L., Monteiro, V.C., Human and domestic animal populations as a potential threat to wild carnivore conservation in a fragmented landscape from the Eastern Brazilian Amazon (2007) Biological Conservation, 138, pp. 290-296Yanoski, A.A., Mercolli, C., The use of wetland areas by nocturnal mammals, with emphasis to Cerdocyon thous LINNEUS, 1977 and Procyon cancrivoros CUVIER, 1978 (1990) Spheniscos, 8, pp. 11-20