[1] Bangs, E.E. and Fritts, S.H. (1996) Reintroducing the Gray Wolf to Central Idaho and Yellowstone National Park. Wildlife Society Bulletin, 24, 402-413.
[2] Ripple, W.J., Larsen, A.J., Renkin, R.A. and Smith, D.W. (2001) Trophic cascade among wolves, elk and aspen on Yellowstone National Park’s northern range. Biological Conservation, 102, 227-234. doi:10.1016/S0006-3207(01)00107-0
[3] Ripple, W.J. and Beschta, R.L. (2003) Wolf reintro-duction, predation risk, and cottonwood recovery in Yellowstone National Park. Forest Ecology Management, 184, 299-313. doi:10.1016/S0378-1127(03)00154-3
[4] White, C.A., Olmsted, C.E. and Kay, D.E. (1998) Aspen, elk, and fire in the Rocky Mountain national parks of North America. Wildlife Society Bulletin, 26, 449-462.
[5] Ripple, W.J. and Beschta, R.L. (2004) Wolves, elk, willows, trophic cascades in the upper Gallatin Range of South-western Montana, USA. Forest Ecology Management, 200, 161-181. doi:10.1016/j.foreco.2004.06.017
[6] Beyer, H.L., Merrill, E.H., Varley, N. and Boyce, M.S. (2007) Willow on Yellowstone’s northern range: Evidence for a trophic cascade? Ecological Applications, 17, 1563-1571. doi:10.1890/06-1254.1
[7] Smith, D.W., Peterson, R.O. and Houston, D.B. (2003) Yellowstone after wolves. BioOne, 53, 330-340.
[8] Creel, S. and Christianson, D. (2009) Wolf presence and increased willow consumption by Yellowstone elk: Implications for trophic cascades. Ecology, 90, 2454-2466. doi:10.1890/08-2017.1
[9] Bangs, E.E., Fritts, S.H., Fontaine, J.A., Smith, D.W., Murphy, K.M., Mach, C.M. and Niemeyer, C.C. (1998) Status of gray wolf restoration in Montana, Idaho and Wyoming. Wildlife Society Bulletin, 26, 785-798.
[10] Smith, D.W. and Bangs, E.E. (2009) Reintroduction of wolves to Yellowstone National Park: History, values and ecosystem restoration. In: Hayward, M.W. and Somers, M.J., Eds., Reintroduction of Top-Order Predators, Blackwell Publishing.
[11] Fritts, S.H., Stephenson, R.O., Hayes, R.D. and Boitani, L. (2003) Wolves and humans. In: Mech, L.D., Boitani, L. Eds., Wolves: Behavior, Ecology and Conservation, University of Chicago Press, 289-340.
[12] Muhly, T.B. and Musiani, M. (2009) Livestock depredation by wolves and the ranching economy in the Northern US. Ecological Economics, 68, 2439-2450.
[13] Creel, S. and Christianson, D. (2008) Relationships between direct predation and risk effects. Trends in Ecology and Evolution, 23, 194-201. doi:10.1016/j.tree.2007.12.004
[14] Preisser, E.L. and Bolnick, D.I. (2008) The many faces of fear: Comparing the pathways and impacts of nonconsumptive predator effects on prey populations. PLoS One, 3, e2465. doi:10.1371/journal.pone.0002465
[15] Fortin, D., Beyer, H.L., Boyce, M.S., Smith, D.W., Duchesne, T. and Mao, J.S. (2005) Wolves influence elk movements: Behavior shapes a trophic cascade in Yellowstone National Park. Ecology, 86, 1320-1330. doi:10.1890/04-0953
[16] Creel, S., Winnie, J.A.J., Maxwell, B., Hamlin, K. and Creel, M. (2005) Elk alter habitat selection as an antipredator response to wolves. Ecology, 86, 3387-3397. doi:10.1890/05-0032
[17] Mao, J.S., Boyce, M.S., Smith, D.W., Singer, F.J., Vales, D.J., Vore, J.M. and Merrill, E.H. (2005) Habitat selection by elk before and after wolf reintroduction in Yellowstone National Park. Journal of Wildlife Management, 69, 1691-1707. doi:10.2193/0022-541X(2005)69[1691:HSBEBA]2.0.CO;2
[18] Hebblewhite, M. and Pletscher, D.H. (2002) Effect of elk group size on predation by wolves. Canadian Journal of Zoology, 80, 800-809. doi:10.1139/z02-059
[19] Creel, S. and Winnie, J.A.J. (2005) Responses of elk herd size to fine-scale spatial and temporal variation in the risk of predation by wolves. Animal Behaviour, 69, 1181-1189. doi:10.1016/j.anbehav.2004.07.022
[20] Jayakody, S., Sibbald, A.M., Gordon, I.J. and Lambin, X. (2008) Red deer Cervus elephus vigilance behaviour differs with habitat and type of human disturbance. Wildlife Biology, 14, 81-91. doi:10.2981/0909-6396(2008)14[81:RDCEVB]2.0.CO;2
[21] Berger, J., Swenson, J.E. and Persson, I.L. (2001) Recolonizing carnivores and na?ve prey: Conservation lesson from Pleistocene extinctions. Science, 291, 1036-1039. doi:10.1126/science.1056466
[22] Laundré, J.W., Hernanadez, L. and Altendorf, K.B. (2001) Wolves, elk, and bison: Reestablishing the ‘‘landscape of fear’’ in Yellowstone National Park, USA. Canadian Journal of Zoology, 79, 1401-1409. doi:10.1139/z01-094
[23] Hamel, S. and Coté, S.D. (2008) Trade-offs in activity budget in an alpine ungulate: Contrasting lactating and nonlactating females. Animal Behaviour, 75, 217-227. doi:10.1016/j.anbehav.2007.04.028
[24] Li, Z. and Jiang, Z. (2008) Group size effect on vigilance: evidence from Tibetan gazelle in Upper Buha River, Qinghai-Tibet Plateau. Behavioural Processes, 78, 25-28. doi:10.1016/j.beproc.2007.11.011
[25] Musiani, M., Murphy, T., Gates, C.C., Callaghan, C., Smith, M.E. and Tosoni, E. (2005) Seasonality and reoccurrence of depredation and wolf control in Western North America. Wildlife Society Bulletin, 33, 876-887. doi:10.2193/0091-7648(2005)33[876:SARODA]2.0.CO;2
[26] Price, E.O. (1984) Behavioral aspects of animal domestication. The Quarterly Review of Biology, 59, 1-32. doi:10.1086/413673
[27] Diamond, F. (2002) Evolution, consequences and future of plant and animal domestication. Nature, 418, 700-707. doi:10.1038/nature01019
[28] Price, E.O. (2002) Predation, infectious diseases and parasites. In: Price, E.O., Ed., Animal Domestication and Behavior, CABI Publishing, New York, 107-112. doi:10.1079/9780851995977.0107
[29] Welp, T., Rushen, J., Kramer, D.L., Festa-Bianchet, M. and de Passillé, A.M.B. (2004) Vigilance as a measure of fear in dairy cattle. Applied Animal Behaviour Science, 87, 1-13. doi:10.1016/j.applanim.2003.12.013
[30] Kluever, B.M., Howery, L.D., Breck, S.W. and Bergmann, D.L. (2009) Predator and heterospecific stimuli alter behaviour in cattle. Behavioural Processes, 81, 85-91. doi:10.1016/j.beproc.2009.02.004
[31] Fl?rcke, C., Engle, T.E., Grandin, T. and Deesing, M.J. (2012) Individual differences in calf defence patterns in Red Angus beef cows. Applied Animal Behavior Science, 139, 203-208. doi:10.1016/j.applanim.2012.04.001
[32] Grandin, T., Deesing, M.J., Struthers, J.J. and Swinker, A.M. (1995) Cattle hair whorl patterns above the eyes are more behaviorally agitated during restraint. Applied Animal Behaviour Science, 46, 117-123. doi:10.1016/0168-1591(95)00638-9
[33] Randle, H.D. (1998) Facial hair whorl position and temperament in cattle. Applied Animal Behaviour Science, 56, 139-147. doi:10.1016/S0168-1591(97)00086-5
[34] Hyde, L. (2010) Limousine Breeders tackle temperament —genetic trend shows power of selection. http://www.nalf.org/pdf/2010/aug19/tackletemperament
[35] Voisinet, B.D., Grandin, T., Tatum, J.D., O’Connor, S.F. and Struthers, J.J. (1997) Feedlot cattle with calm temperaments have higher average daily gains than cattle with excitable temperaments. Journal of Animal Science, 75, 892-896.
[36] Boivin, X., Le Neindre, P. and Chupin, J.M. (1992) Establishment of cattle-human relationships. Applied Animal Behaviour Science, 32, 325-335. doi:10.1016/S0168-1591(05)80025-5
[37] Grandin, T. (1997) Assessment of stress during handling and transport. Journal of Animal Science, 75, 249-257.
[38] Brou?ek, J., Uhrin?at, M., ?och, M. and Ki?ac, P. (2008) Genetics of behaviour in cattle. Slovakian Journal of Animal Science, 41, 166-172.
[39] Drolet, B.A., Clowry Jr., L., Mc Tigue, M.K. and Esterly, N.B. (1995) The hair collar sign: Marker of cranial dysraphism. Pediatrics, 96, 309-313.
[40] Smith, D.W. and Gong, B.T. (1973) Scalp hair patterning as a clue to early fetal brain development. Pediatrics, 83, 374-380. doi:10.1016/S0022-3476(73)80258-6
[41] Smith, D.W. and Greely, M.J. (1978) Unruly scalp hair in infants: Its nature and relevance to problems of brain morphogenesis. Pediatrics, 61, 783-785.
[42] Higginbottom, M.C., Jones, K.L., Hall, B.D. and Smith, D.W. (1979) The amniotic band disruption complex: Timing of amniotic rupture and variable spectra of consequent defects. Pediatrics, 95, 544-549. doi:10.1016/S0022-3476(79)80759-3
[43] Faye-Petersen, O., David, E., Rangwala, N., Seaman, J.P., Hua, Z. and Heller, D.S. (2006) Otocephaly: Report of five new cases and a literature review. Fetal and Pediatric Pathology, 25, 277-296. doi:10.1080/15513810601123417
[44] Gauly, M., Mathiak, H., Hoffman, K., Kraus, M. and Erhardt, G. (2001) Estimating genetic variability in temperamental traits in German Angus and Simmental cattle. Applied Animal Behaviour Science, 74, 109-119. doi:10.1016/S0168-1591(01)00151-4
[45] Langbein, J. and Raasch, M.L. (2000) Investigations on the hiding behaviour of calves at pasture. Archiv der Tierzucht, 43, 203-210.
[46] Price, E.O. (1999) Behavioral development in animals undergoing domestication. Applied Animal Behaviour Science, 65, 245-271. doi:10.1016/S0168-1591(99)00087-8
[47] Laporte, I., Muhly, T.B., Pitt, J.A., Alexander, M. and Musiani, M. (2010) Effects of wolves on elk and cattle behaviors: Implications for livestock production and wolf conservation. PlosOne, 5, e11954. doi:10.1371/journal.pone.0011954
[48] Griffin, A.S. (2004) Social learning about predators: A review and prospectus. Animal Learning and Behavior, 32, 131-140. doi:10.3758/BF03196014
[49] Dorrance, M.J. (1982) Predation losses of cattle in Alberta. Journal of Range Management, 35, 690-692. doi:10.2307/3898239
[50] Palmeira, F.B.L., Crawshaw Jr., P.G., Hahhad, C.M., Ferraz, K.M.P.M.B. and Verdade, L.M. (2008) Cattle depredation by puma (Puma concolor) and jaguar (Panthera onca) in central-western Brazil. Biological Conservations, 141, 118-125. doi:10.1016/j.biocon.2007.09.015
[51] Parsons, M.H., Lamont, B.B., Kovacs, B.R. and Davies, S.J.F. (2007) Effects of novel and historic predator urines on semi-wild western grey kangaroos. Journal of Wildlife Management, 71, 1225-1228. http://www.agtoursusa.com/BeefCattleUSA.htm