Urban Ecosystems

, Volume 17, Issue 1, pp 149–162 | Cite as

The secret life of the city rat: a review of the ecology of urban Norway and black rats (Rattus norvegicus and Rattus rattus)

  • Alice Y. T. FengEmail author
  • Chelsea G. Himsworth


Norway rats (Rattus norvegicus) and black rats (Rattus rattus) are among the most prolific and widespread urban pest species in the world. Yet despite their ubiquity, a unified understanding of the ecology of these species in urban habitats eludes us. A comprehensive understanding of urban rat ecology is important for managing rat populations and mitigating the harmful effects that they may have on urban ecosystems (e.g., structural damage, food contamination, and disease spread). The objective of this systematic review and narrative synthesis is to collate, compare, and contrast data from the published literature regarding the ecology of Norway and black rats in urban centers. Themes emerging from the synthesis process, and discussed in detail, include population dynamics, behavior, movement, and environmental influences on rat populations.


Ecology Rat Rattus Urban Review 



We would like to thank Dr. Darin Bennett for his contributions to the manuscript. This study was supported by the Canadian Institutes of Health Research (MOP – 119530 and CGV-104833), the City of Vancouver, the BC Centre for Disease Control, and the Urban Health Research Initiative.


  1. Aplin KP, Chesser T, ten Have J (2003) Evolutionary biology of the genus Rattus: profile of an archetypal rodent pest. In: Singleton GR, Hinds LA, Krebs CJ, Spratt DM (eds) Rats, mice and people: rodent biology and management. ACIAR, Canberra, pp 487–498Google Scholar
  2. Arai L, Britten N, Popay J, Roberts H, Petticrew M, Rodgers M, Sowden A (2007) Testing methodological developments in the conduct of narrative synthesis: a demonstration review of research on the implementation of smoke alarm interventions. Evid Policy 3:361–383CrossRefGoogle Scholar
  3. Barnett SA (1956) Behaviour components in the feeding of wild and laboratory rats. Behavior 9:24–43CrossRefGoogle Scholar
  4. Barnett SA (1963) The rat; a study in behaviour. Methuen, LondonGoogle Scholar
  5. Barnett SA, Spencer MM (1951) Feeding, social behaviour and interspecific competition in wild rats. Behavior 3:229–242Google Scholar
  6. Barnett SA, Spencer MM (1953) Experiments on the food preferences of wild rats (Rattus norvegicus Berkenhout). J Hyg 51:16–34PubMedCentralPubMedCrossRefGoogle Scholar
  7. Birney EC, Jenness R, Baird DD (1975) Eye lens proteins as criteria of age in cotton rats. J Wildl Manag 39:718–728CrossRefGoogle Scholar
  8. Bonnefoy X, Kampen H, Sweeney K (2008) Public health significance of urban pests. World Health Organization, CopenhagenGoogle Scholar
  9. Breed MD, Moore J (2011) Conservation and behavior. In: Animal behavior. Academic, San Diego, pp 433–463Google Scholar
  10. Calhoun JB (1948) Mortality and movement of brown rats (Rattus norvegicus) in artificially supersaturated populations. J Wildl Manag 12:167–172CrossRefGoogle Scholar
  11. Calhoun JB (1962) The ecology and sociology of the Norway rat. U.S. Department of health, Education and Welfare, BethesdaGoogle Scholar
  12. Cavia R, Ruben Cueto G, Suárez OV (2009) Changes in rodent communities according to the landscape structure in an urban ecosystem. Landsc Urban Plan 90:11–19CrossRefGoogle Scholar
  13. Childs JE, McLafferty SL, Sadek R, Miller GL, Khan AS, DuPree ER, Advani R, Mills JN, Glass GE (1998) Epidemiology of rodent bites and prediction of rat infestation in New York City. Am J Epidemiol 148:78–87PubMedCrossRefGoogle Scholar
  14. Clapperton BK (2006) A review of the current knowledge of rodent behaviour in relation to control devices. Sci Conserv 263:1–55Google Scholar
  15. Clinton JM (1969) Rats in urban America. Public Health Rep 84:1–7PubMedCentralPubMedCrossRefGoogle Scholar
  16. Dapson RW, Ireland JM (1972) An accurate method of determining age in small mammals. J Mammal 53:100–106PubMedCrossRefGoogle Scholar
  17. Davis DE (1949) The weight of wild brown rats at sexual maturity. J Mammal 30:125–130CrossRefGoogle Scholar
  18. Davis DE (1951a) A comparison of reproductive potential of two rat populations. Ecology 32:469–475CrossRefGoogle Scholar
  19. Davis DE (1951b) The relation between the level of population and the prevalence of Leptospira, Salmonella, and Capillaria in Norway rats. Ecology 32:465–468CrossRefGoogle Scholar
  20. Davis DE (1953) The characteristics of rat populations. Q Rev Biol 28:373–401PubMedCrossRefGoogle Scholar
  21. Davis DE, Christian JJ (1956) Changes in Norway rat populations induced by introduction of rats. J Wildl Manag 20:378–383CrossRefGoogle Scholar
  22. Davis DE, Christian JJ (1958) Population consequences of a sustained yield program for Norway rats. Ecology 39:217–222CrossRefGoogle Scholar
  23. Easterbrook JD, Shields T, Klein SL, Glass GE (2005) Norway rat population in Baltimore, Maryland, 2004. Vector Borne Zoonotic Dis 5:296–299PubMedCrossRefGoogle Scholar
  24. Emlen JT, Stokes AW, Davis DE (1949) Methods for estimating populations of brown rats in urban habitats. Ecology 30:430–442CrossRefGoogle Scholar
  25. Frantz SC, Comings JP (1976) Evaluation of urban rodent infestation - an approach in Nepal. Proceedings of the 7th Vertebrate Pest Conference, Monterey, California, pp. 279–290Google Scholar
  26. Gardner-Santana LC, Norris DE, Fornadel CM, Hinson ER, Klein SL, Glass GE (2009) Commensal ecology, urban landscapes, and their influence on the genetic characteristics of city-dwelling Norway rats (Rattus norvegicus). Mol Ecol 18:2766–2778PubMedCrossRefGoogle Scholar
  27. Glass GE, Korch GW, Childs JE (1988) Seasonal and habitat differences in growth rates of wild Rattus norvegicus. J Mammal 69:587–592CrossRefGoogle Scholar
  28. Glass GE, Gardner-Santana LC, Holt RD, Chen J, Shields TM, Roy M, Schachterle S, Klein SL (2009) Trophic garnishes: cat-rat interactions in an urban environment. PLoS One 4:e5794PubMedCentralPubMedCrossRefGoogle Scholar
  29. Hardy AR, Quy RJ, Huson LW (1983) Estimation of age in the Norway rat (Rattus norvegicus Berkenhout) from the weight of the eyelens. J Appl Ecol 20:97–102CrossRefGoogle Scholar
  30. Himsworth CG, Parsons KL, Jardine C, Patrick DM (2012) Rats, cities, people, and pathogens: a systematic review and narrative synthesis of literature regarding the epidemiology of rat-associated zoonoses in urban centers. Vector Borne Zoonotic Dis Accepted November 25, 2012Google Scholar
  31. Inglis IR, Shepherd DS, Smith P, Haynes PJ, Bull DS, Cowan DP, Whitehead D (1996) Foraging behaviour of wild rats (Rattus norvegicus) towards new foods and bait containers. Appl Anim Behav Sci 47:175–190CrossRefGoogle Scholar
  32. Kosoy MY, Regnery RL, Kosaya OI, Jones DC, Marston EL, Childs JE (1998) Isolation of Bartonella spp. from embryos and neonates of naturally infected rodents. J Wildl Dis 34:305–309PubMedCrossRefGoogle Scholar
  33. Langton SD, Cowan DP, Meyer AN (2001) The occurrence of commensal rodents in dwellings as revealed by the 1996 English House Condition Survey. J Appl Ecol 38:699–709CrossRefGoogle Scholar
  34. Lund M (1994) Commensal rodents. In: Buckle A, Smith R (eds) Rodent pests and their control. CABI Publishing, Wallingford, pp 23–43Google Scholar
  35. Margulis HL (1977) Rat fields, neighborhood sanitation, and rat complaints in Newark, New Jersey. Geogr Rev 67:221–231CrossRefGoogle Scholar
  36. Marsh RE (1988) Current (1987) and future rodenticides for commensal rodent control. Bull Soc Vector Ecol 13:102–107Google Scholar
  37. Marsh RE (1994) Roof rats. The handbook: prevention and control of wildlife damage. Paper 6Google Scholar
  38. Martin RE, Pine RH, Deblase AF (2001) Age determination. In: A manual of mammalogy, vol 3. McGraw-Hill, Boston, pp 244–252Google Scholar
  39. Masi E, Vilaça PJ, Razzolini MTP (2009) Environmental conditions and rodent infestation in Campo Limpo district, São Paulo municipality, Brazil. Int J Environ Health Res 19:1–16PubMedCrossRefGoogle Scholar
  40. Masi E, Pino FA, Santos MDGS, Genehr L, Albuquerque JOM, Bancher AM, Alves JCM (2010) Socioeconomic and environmental risk factors for urban rodent infestation in São Paulo, Brazil. J Pest Sci 83:231–241CrossRefGoogle Scholar
  41. McClintock MK, Adler NT (1978) The role of the female during copulation in wild and domestic Norway rats (Rattus norvegicus). Behavior 67:67–96CrossRefGoogle Scholar
  42. McGuire B, Pizzuto T, Bemis WE, Getz LL (2006) General ecology of a rural population of Norway rats (Rattus norvegicus) based on intensive live trapping. Am Midl Nat 155:221–236CrossRefGoogle Scholar
  43. Meerburg BG, Singleton GR, Kijlstra A (2009) Rodent-borne diseases and their risks for public health. Crit Rev Microbiol 35:221–270PubMedCrossRefGoogle Scholar
  44. Mills DS (2010) Encyclopedia of applied animal behaviour and welfare. CABI Publishing, LondonGoogle Scholar
  45. Myers K, Carstairs J, Gilber N (1977) Determination of age of indigenous rats in Australia. J Wildl Manag 41:322–326CrossRefGoogle Scholar
  46. Nagorsen DW (2005) Rodents & lagomorphs of British Columbia. Royal British Columbia Museum, VictoriaGoogle Scholar
  47. Noble J, Todd PM, Tucif E (2001) Explaining social learning of food preferences without aversions: an evolutionary simulation model of Norway rats. Proc R Soc Lond B 268:141–149CrossRefGoogle Scholar
  48. Nowak RM, Walker EP (1991) Walker’s mammals of the world. Johns Hopkins University Press, BaltimoreGoogle Scholar
  49. Omodu EA, Ati TT (2010) A survey of rats trapped in residential apartments and their ectoparasites in Makurdi, Nigeria. Res J Agric Biol Sci 6:144–149Google Scholar
  50. Orgain H, Schein MW (1953) A preliminary analysis of the physical environment of the Norway rat. Ecology 34:467–473CrossRefGoogle Scholar
  51. Perry JS (1945) The reproduction of the wild brown rat (Rattus norvegicus Erxleben). Proc Zool Soc London 115:19–46CrossRefGoogle Scholar
  52. Perry RD, Fetherston JD (1997) Yersinia pestis–etiologic agent of plague. Clin Microbiol Rev 10:35–66PubMedCentralPubMedGoogle Scholar
  53. Pimentel D, Lach L, Zuniga R, Morrison D (2000) Environmental and economic costs of nonindigenous species in the United States. Bioscience 50:53–65CrossRefGoogle Scholar
  54. Pimentel D, McNair S, Janecka J, Wightman J, Simmonds C, O’Connell C, Wong E, Russel L, Zern J, Aquino T, Tsomondo T (2001) Economic and environmental threats of alien plant, animal, and microbe invasions. Agric Ecosyst Environ 84:1–20CrossRefGoogle Scholar
  55. Promkerd P, Khoprasert Y, Virathavone P, Thoummabouth M, Sirisak O, Jäekel T (2008) Factors explaining the abundance of rodents in the city of Luang Prabang, Lao PDR, as revealed by field and household surveys. Integr Zool 3:11–20PubMedCrossRefGoogle Scholar
  56. Sacchi R, Gentilli A, Pilon N, Bernini F (2008) GIS-modelling the distribution of Rattus norvegicus in urban areas using non toxic attractive baits. Hystrix It J Mammal 19:13–22Google Scholar
  57. Sharp D (2007) On rats, refuse, and recycling. J Urban Health 84:637–638PubMedCentralPubMedCrossRefGoogle Scholar
  58. Singleton G (2003) Impacts of Rodents on rice production in Asia. IRRI Discussion Paper Series no. 45, Los Baños, Philippines, pp 30Google Scholar
  59. Storer TI, Davis DE (1953) Studies on rat reproduction in San Francisco. J Mammal 34:365–373CrossRefGoogle Scholar
  60. Takahashi LK, Lore RK (1980) Foraging and food hoarding of wild Rattus norvegicus in an urban environment. Behav Neural Biol 29:527–531PubMedCrossRefGoogle Scholar
  61. Tamarin RH, Malecha SR (1972) Reproductive parameters in Rattus rattus and Rattus exulans of Hawaii, 1968 to 1970. J Mammal 53:513–528PubMedCrossRefGoogle Scholar
  62. Traweger D, Slotta-Bachmayr L (2005) Introducing GIS-modelling into the management of a brown rat (Rattus norvegicus Berk.) (Mamm. Rodentia Muridae) population in an urban habitat. J Pest Sci 78:17–24CrossRefGoogle Scholar
  63. Traweger D, Travnitzky R, Moser C, Walzer C, Bernatzky G (2006) Habitat preferences and distribution of the brown rat (Rattus norvegicus Berk.) in the city of Salzburg (Austria): implications for an urban rat management. J Pest Sci 79:113–125CrossRefGoogle Scholar
  64. United Nations (2012) World urbanization prospects: the 2011 revision. United Nations Population Division, New YorkGoogle Scholar
  65. Vadell MV, Cavia R, Suárez OV (2010) Abundance, age structure and reproductive patterns of Rattus norvegicus and Mus musculus in two areas of the city of Buenos Aires. Int J Pest Manag 56:327–336CrossRefGoogle Scholar
  66. Whishaw IQ, Whishaw GE (1996) Conspecific aggression influences food carrying: studies on a wild population of Rattus norvegicus. Aggress Behav 22:47–66CrossRefGoogle Scholar
  67. Williams JM (1976) Determination of age of Polynesian rats (Rattus exulans). Proc N Z Ecol Soc 23:79–82Google Scholar
  68. Wilson DE, Reeder DAM (2005) Mammal species of the world: a taxonomic and geographic reference. Johns Hopkins University Press, BaltimoreGoogle Scholar
  69. Wundram IJ, Ruback RB (1986) Urban rats: symbol symptom and symbiosis. Hum Organ 45:212–219Google Scholar
  70. Yahner RH (2001) Fascinating mammals: conservation and ecology in the mid-eastern states. University of Pittsburgh Press, PittsburghGoogle Scholar
  71. Ziporyn T, McClintock MK (1991) Passing as an indicator of social dominance among female wild and domestic Norway rats. Behavior 118:26–41CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.School of Population and Public HealthUniversity of British ColumbiaVancouverCanada
  2. 2.British Columbia Ministry of AgricultureAbbotsfordCanada

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