Innis., Dagg, Anne (2011). Animal friendships. Cambridge University Press. ISBN 9781107005426. OCLC 768168148.
F., Lott, Dale (2003). American bison: a natural history. University of California Press. ISBN 978-0520240629. OCLC 488884487.
Sanders, Clinton R. (August 2003). "Actions Speak Louder than Words: Close Relationships between Humans and Nonhuman Animals". Symbolic Interaction. 26 (3): 405–426. doi:10.1525/si.2003.26.3.405. ISSN 0195-6086.
Marc., Bekoff (2010). The Emotional Lives of Animals: a Leading Scientist Explores Animal Joy, Sorrow, and Empathy? and Why They Matter. New World Library. ISBN 9781577313489. OCLC 933466964.
Serpell, J.A., 2004. Factors influencing human attitudes to animals and theirwelfare. Anim. Welfare 13, 145–151.
Rehn, T., & Keeling, L. (2016). Measuring dog-owner relationships: Crossing boundaries between animal behaviour and human psychology. Applied Animal Behaviour Science, 183, 1-9.
Rehn, T., McGowan, R., & Keeling, L. (2013). Evaluating the Strange Situation Procedure (SSP) to Assess the Bond between Dogs and Humans. Plos ONE, 8(2), e56938.
Rochlitz, Irene (2007-04-17). The Welfare of Cats. Springer Science & Business Media. ISBN 9781402032271.
Pongrácz, Péter; Szapu, Julianna Szulamit (October 2018). "The socio-cognitive relationship between cats and humans – Companion cats (Felis catus) as their owners see them". Applied Animal Behaviour Science. 207: 57–66. doi:10.1016/j.applanim.2018.07.004. ISSN 0168-1591.
Rees, Lucy (1997). The Horses Mind. London: Ebury Press.
Keaveney, Susan M. (May 2008). "Equines and their human companions". Journal of Business Research. 61 (5): 444–454. doi:10.1016/j.jbusres.2007.07.017. ISSN 0148-2963.
Paterson, J. D. (1990-04-01). "Woman in the Mists: The Story of Dian Fossey and the Mountain Gorillas of Africa. By Farley Mowat. New York: Warner Books, Inc., 1987. xiv + 3380 pp. Published in Canada under the title Virunga: The Passion of Dian Fossey. Toronto, Ontario: McClelland & Stewart Publishers, 1987. Illustrations, maps, index. $19.95". Forest & Conservation History. 34 (2): 97–98. doi:10.2307/3983872. ISSN 1046-7009. JSTOR 3983872.
Smuts, Barbara (2001). "Encounters with Animal Minds". Journal of Consciousness Studies. 8 (5–7): 5–7.
Dahlheim, Marilyn E.; Fisher, H. Dean; Schempp, James D. (1984), "Sound Production by the Gray Whale and Ambient Noise Levels in Laguna San Ignacio, Baja California Sur, Mexico", The Gray Whale: Eschrichtius Robustus, Elsevier, pp. 511–541, doi:10.1016/b978-0-08-092372-7.50028-5, ISBN 9780080923727
Feuerstein, N.; Terkel, Joseph (September 2008). "Interrelationships of dogs (Canis familiaris) and cats (Felis catus L.) living under the same roof". Applied Animal Behaviour Science. 113 (1–3): 150–165. doi:10.1016/j.applanim.2007.10.010. ISSN 0168-1591.
Whelan, P (ngày 18 tháng 1 năm 1997). "Chilly northern birders just keep on counting". Globe and Mail (Toronto).
"Broadminded Robins". Globe and Mail (Toronto). ngày 21 tháng 3 năm 2002.
Eugene., Linden (2001). The parrot's lament and other true tales of animal intrigue, intelligence, and ingenuity. Library of Congress, NLS/BPH. ISBN 978-0525944768. OCLC 1012161998.
1941-, Masson, J. Moussaieff (Jeffrey Moussaieff) (2003), The pig who sang to the moon the emotional world of farm animals, BBC Audiobooks America, ISBN 978-0792730484, OCLC 1059163663
Zeder, M. (2012). Pathways to animal domestication. Biodiversity In Agriculture: Domestication, Evolution Andsustainability, 227-59.
Marie., Kostan, Karen (2010). Mutualistic interspecific communication: development and maintenance in hobby sheep herding. OCLC 708493090.
Krams, I. (2010), "Interspecific Communication", Encyclopedia of Animal Behavior, Elsevier, pp. 196–202, doi:10.1016/b978-0-08-045337-8.00009-7, ISBN 9780080453378
Zuberbuhler, K. (2000-04-07). "Interspecies semantic communication in two forest primates". Proceedings of the Royal Society B: Biological Sciences. 267 (1444): 713–718. doi:10.1098/rspb.2000.1061. ISSN 0962-8452. PMC 1690588.
Zeder, Melinda A. (2012), "Pathways to Animal Domestication", Biodiversity in Agriculture, Cambridge University Press, pp. 227–259, doi:10.1017/cbo9781139019514.013, ISBN 9781139019514
Rehn, Therese; Keeling, Linda J. (October 2016). "Measuring dog-owner relationships: Crossing boundaries between animal behaviour and human psychology". Applied Animal Behaviour Science. 183: 1–9. doi:10.1016/j.applanim.2016.07.003. ISSN 0168-1591.
Izar, Patrícia; Verderane, Michele P.; Visalberghi, Elisabetta; Ottoni, Eduardo B.; Gomes De Oliveira, Marino; Shirley, Jeanne; Fragaszy, Dorothy (2006). "Cross-genus adoption of a marmoset (Callithrix jacchus) by wild capuchin monkeys (Cebus libidinosus): case report". American Journal of Primatology. 68 (7): 692–700. doi:10.1002/ajp.20259. ISSN 0275-2565.
Hare, B. et al. (2002) The domestication of cognition in dogs. Science 298, 1634–1636.
Miklósi, Á., Topál, J., & Csányi, V. (2007). Big thoughts in small brains? Dogs as a model for understanding human social cognition. NeuroReport, 18(5), 467-471.
Ga´csi, M. et al. (2013) Human analogue safe haven effect of the owner: behavioural and heart rate response to stressful social stimuli in dogs. PLoS ONE 8, e58475