Pig Progress (2011): «Humans Can Now Play Video Games With Pigs». Online: https://www.pigprogress.net/Home/General/2011/12/Hu.mans-can-now-play-computer-games-with-pigs-see-Video-PP008159W/ (lest 22.11.2019).
Plinius den elder (1855): The Natural History, oversatt av John Bostock, London. Online: http://www.perseus.tufts.edu/hopper/text?doc=Per.seus%3Atext%3A1999.02.0137%3Abook%3D2%3Achapter%3D12.
Plutark (1957): Moralia, Vol. 12, Harvard University Press.
Pollan, Michael (2002): «An Animal’s Place», New York Times Magazine: https://www.nytimes.com/2002/11/10/magazine/an-animal-s-place.html (lest 20.01.2019).
Pollan, Michael (2004): The omnivore dilemma: The natural history of four meals, Penguine books, New York.
Premack, D. & Woodruff, G. (1978): «Does the chimpanzee have a theory of mind?» Behavioral Brain Science, 4, 515–526. DOI: 10.1017/S0140525X00076512.
Presse Gazette (2009): «British journalisms ever best scoops»: https://www.pressgazette.co.uk/british-journalisms-greatest-ever-scoops (lest 20.06.2020).
Psychology Today (2010): «Are Dogs more intelligent than Cats?». Online: https://www.psychologytoday.com/us/blog/canine-corner/201012/are-dogs-more-intelligent-cats (lest 01.03.2019).
Psychology Today (2019): «How eye contact prepares the brain to connect», 25.02.2019. Online: https://www.psychologytoday.com/us/blog/brain-waves/201902/how-eye-contact-prepares-the-brain-connect (lest 26.06.2020).
Redding, Richard W. (2015): «The pig and the chicken in the Middle East: Modeling human subsistence behavior in the archaeological record using historical and animal husbandry data», Journal of Archaeological Research 23(4): 325–368. DOI: 10.1007/s10814–015–9083–2.
Redding, Richard (2010): «Status and diet at the workers’ town, Giza, Egypt», i: Campana D. m.fl.: Anthropological Approaches to Zooarchaeology, Oxbow Books, Oxford.
Reuters (2018): «Seven stories of sows: Inside China’s high-rise hog farms», Reuters/The World: https://www.pri.org/stories/2018-05-11/seven-stories-sows-inside-chinas-high-rise-hog-farms (lest 12.06.2020).
Reuters (2020): «Before corona, China bungled swine epidemic with secre.cy». Online: https://www.reuters.com/article/us-swinefever-china-epi.demic-specialrepo/special-report-before-coronavirus-china-bungled-swi.ne-epidemic-with-secrecy-idUSKBN20S189.
Ridgway, Sam H. m.fl. (2019): «Higher neuron densities in the cerebral cortex and larger cerebellums may limit dive times of delphinids compared to deep-diving toothed whales». PLoS ONE. 14 (12): e0226206. DOI: 10.1371/journal.
Robinson T.P. et al. (2014): «Mapping the Global Distribution of Livestock», PLoS ONE 9(5): e96084. DOI: 10.1371/journal.pone.0096084.
Rosen, Zvi, Issachar (2006): ‘«Pigs in Space’: Geographic Separatism in Multicultural Societies», i: Freeman, Michael (red.): Law and Sociology, Oxford University Press, London.
Rosenberg, Michael et al. (1995): «Hallan Cemi Tepsi: Preliminary observations concerning early neolithic Subsistence behaviors in eastern Anatolia», Anatolica (21), 1–12.
Rosenberg, Michael m.fl. (1998): «Hallan Cemi, pig husbandry, and post-pleistocene adaptations along the Taurus-Sagros Arc (Turkey)», Paléorient (24), 25–41.
Ross, Eric B. (1983): «The Riddle of the Scottish Pork Taboo», BioScience 33 (2), 99–106.
Rozin, Paul (1976): «The Selection of Foods by Rats, Humans and Other Animals», Advances in the Study of Behavior 6, 21–76, DOI: 10.1016/S0065–3454(08)60081–9.
Russel, Bertrand (1927): Why I Am Not a Christian, Watts & Co., Rationalist Press Association Limited. Online: https://users.drew.edu/~jlenz/whynot.html.
Salisbury, Joyce E. (2010): The beast within: Animals in the middle ages, Routledge, London.