Magnetoreception, the ability to sense the Earth's magnetic field (MF), is a widespread phenomenon in the animal kingdom. In 1966, the first report on a magnetosensitive vertebrate, the European robin (Erithacus rubecula), was published. After that, numerous further species of different taxa have been identified to be magnetosensitive as well. Recently, it has been demonstrated that domestic dogs (Canis lupus familiaris) prefer to align their body axis along the North-South axis during territorial marking under calm MF conditions and that they abandon this preference when the Earth's MF is unstable. In a further study conducting a directional two-choice-test, dogs showed a spontaneous preference for the northern direction. Being designated as putatively magnetosensitive and being also known as trainable for diverse choice and search tests, dogs seem to be suitable model animals for a direct test of magnetoreception: learning to find a magnet. Using operant conditioning dogs were trained to identify the MF of a bar magnet in a three-alternative forced-choice experiment. We excluded visual cues and used control trials with food treats to test for the role of olfaction in finding the magnet. While 13 out of 16 dogs detected the magnet significantly above chance level (53-73% success rate), none of the dogs managed to do so in finding the food treat (23-40% success rate). In a replication of the experiment under strictly blinded conditions five out of six dogs detected the magnet above chance level (53-63% success rate). These experiments support the existence of a magnetic sense in domestic dogs. Whether the sense enables dogs to perceive MFs as weak as the Earth's MF, if they use it for orientation, and by which mechanism the fields are perceived remain open questions.

Department of Game Management and Wildlife Biology Faculty of Forestry and Wood Sciences Czech University of Life Sciences Prague Czech Republic

Department of General Zoology Faculty of Biology University of Duisburg Essen Essen Germany

Dog School Findeklee Essen Germany

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Adachi I, Kuwahata H, Fujita K. Dogs recall their owner’s face upon hearing the owner’s voice. Animal Cognition. 2007;10(1):17–21. doi: 10.1007/s10071-006-0025-8. PubMed DOI

Adámková J, Svoboda J, Benediktová K, Martini S, Nováková P, Tůma D, Kučerová M, Divišová M, Begall S, Hart V, Burda H. Directional preference in dogs: laterality and “pull of the north”. PLOS ONE. 2017;12(9):e0185243. doi: 10.1371/journal.pone.0185243. PubMed DOI PMC

Begall S, Burda H, Malkemper EP. Magnetoreception in mammals. Advances in the Study of Behavior. 2014;46:45–88. doi: 10.1016/B978-0-12-800286-5.00002-X. DOI

Begall S, Červený J, Neef J, Vojtěch O, Burda H. Magnetic alignment in grazing and resting cattle and deer. Proceedings of the National Academy of Sciences of the United States of America. 2008;105(36):13451–13455. doi: 10.1073/pnas.0803650105. PubMed DOI PMC

Begall S, Malkemper EP, Červený J, Němec P, Burda H. Magnetic alignment in mammals and other animals. Mammalian Biology. 2013;78(1):10–20. doi: 10.1016/j.mambio.2012.05.005. DOI

Burda H, Marhold S, Westenberger T, Wiltschko R, Wiltschko W. Magnetic compass orientation in the subterranean rodent Cryptomys hottentotus (Bathyergidae) Experientia. 1990;46(5):528–530. doi: 10.1007/BF01954256. PubMed DOI

Červený J, Begall S, Koubek P, Nováková P, Burda H. Directional preference may enhance hunting accuracy in foraging foxes. Biology Letters. 2011;7(3):355–357. doi: 10.1098/rsbl.2010.1145. PubMed DOI PMC

Cornu J-N, Cancel-Tassin G, Ondet V, Girardet C, Cussenot O. Olfactory detection of prostate cancer by dogs sniffing rine: a step forward in early diagnosis. European Urology. 2011;59(2):197–201. doi: 10.1016/j.eururo.2010.10.006. PubMed DOI

Danner DA, Fisher AR. Evidence of homing by a coyote (Canis latrans) Journal of Mammalogy. 1977;58(2):244–245. doi: 10.2307/1379591. DOI

Denzau S, Kuriakose D, Freire R, Munro U, Wiltschko W. Conditioning domestic chickens to a magnetic anomaly. Journal of Comparative Physiology A. 2011;197(12):1137–1141. doi: 10.1007/s00359-011-0675-0. PubMed DOI

Dommer DH, Gazzolo PJ, Painter MS, Phillips JB. Magnetic compass orientation by larval Drosophila melanogaster. Journal of Insect Physiology. 2008;54(4):719–726. doi: 10.1016/j.jinsphys.2008.02.001. PubMed DOI

Ehmann R, Boedeker E, Friedrich U, Sagert J, Dippon J, Friedel G, Walles T. Canine scent detection in the diagnosis of lung cancer: revisiting a puzzling phenomenon. European Respiratory Journal. 2012;39(3):669–676. doi: 10.1183/09031936.00051711. PubMed DOI

Emlen ST, Emlen JT. A technique for recording migratory orientation of captive birds. Auk. 1966;83(3):361–367. doi: 10.2307/4083048. DOI

Freire R, Birch TE. Conditioning to magnetic direction in the Pekin duck (Anas platyrhynchos domestica) Journal of Experimental Biology. 2010;213(20):3423–3426. doi: 10.1242/jeb.047613. PubMed DOI

Freire R, Dunston E, Fowler EM, McKenzie GL, Quinn CT, Michelsen J. Conditioned response to a magnetic anomaly in the Pekin duck (Anas platyrhynchos domestica) involves the trigeminal nerve. Journal of Experimental Biology. 2012;215(14):2399–2404. doi: 10.1242/jeb.068312. PubMed DOI

Gellermann LW. Chance orders of alternating stimuli in visual discrimination experiments. Pedagogical Seminary and Journal of Genetic Psychology. 1933;42(1):206–208. doi: 10.1080/08856559.1933.10534237. DOI

Harry WD. The homing of a dog. Science. 1922;56(1447):339. doi: 10.1126/science.56.1447.339. PubMed DOI

Hart V, Malkemper EP, Kušta T, Begall S, Nováková P, Hanzal V, Pleskač L, Ježek M, Policht R, Husinec V, Červený J, Burda H. Directional compass preference for landing in water birds. Frontiers in Zoology. 2013a;10(1):38. doi: 10.1186/1742-9994-10-38. PubMed DOI PMC

Hart V, Nováková P, Malkemper EP, Begall S, Hanzal V, Ježek M, Kušta T, Němcová V, Adámková J, Benediktová K, Červený J, Burda H. Dogs are sensitive to small variations of the Earth’s magnetic field. Frontiers in Zoology. 2013b;10(1):80. doi: 10.1186/1742-9994-10-80. PubMed DOI PMC

Henshaw RE, Stephenson RO. Homing in the gray wolf (Canis lupus) Journal of Mammalogy. 1974;55(1):234–237. doi: 10.2307/1379281. DOI

Kusak J, Skrbinsek AM, Huber D. Home ranges, movements, and activity of wolves (Canis lupus) in the Dalmatian part of Dinarids, Croatia. European Journal of Wildlife Research. 2005;51(4):254–262. doi: 10.1007/s10344-005-0111-2. DOI

Madden RC, Phillips JB. An attempt to demonstrate magnetic compass orientation in 2 species of mammals. Animal Learning and Behavior. 1987;15(2):130–134. doi: 10.3758/BF03204958. DOI

Malewski S, Malkemper EP, Sedláček F, Šumbera R, Caspar K, Burda H, Begall S. Attracted by a magnet: exploration behaviour of rodents in the presence of magnetic objects. Behavioural Processes. 2018;151:11–15. doi: 10.1016/j.beproc.2018.02.023. PubMed DOI

Malkemper EP, Eder SHK, Begall S, Phillips JB, Winklhofer M, Hart V, Burda H. Magnetoreception in the wood mouse (Apodemus sylvaticus): influence of weak frequency-modulated radio frequency fields. Scientific Reports. 2015;5(1):9917. doi: 10.1038/srep09917. PubMed DOI PMC

Marhold S, Wiltschko W, Burda H. A magnetic polarity compass for direction finding in a subterranean mammal. Naturwissenschaften. 1997;84(9):421–423. doi: 10.1007/s001140050422. DOI

Mattisson J, Sand H, Wabakken P, Gervasi V, Liberg O, Linnell JDC, Rauset GR, Pedersen HC. Home range size variation in a recovering wolf population: evaluating the effect of environmental, demographic, and social factors. Oecologia. 2013;173(3):813–825. doi: 10.1007/s00442-013-2668-x. PubMed DOI

McKinley J, Sambrook TD. Use of human-given cues by domestic dogs (Canis familiaris) and horses (Equus caballus) Animal Cognition. 2000;3(1):13–22. doi: 10.1007/s100710050046. DOI

Miklósi Á. Dog behaviour, evolution and cognition. Oxford: Oxford University Press; 2015.

Mora CV, Davison M, Wild JM, Walker MM. Magnetoreception and its trigeminal mediation in the homing pigeon. Nature. 2004;432(7016):508–511. doi: 10.1038/nature03077. PubMed DOI

Mouritsen H, Feenders G, Hegemann A, Liedvogel M. Thermal paper can replace typewriter correction paper in Emlen funnels. Journal of Ornithology. 2009;150(3):713–715. doi: 10.1007/s10336-009-0421-3. DOI

Muheim R, Edgar NM, Sloan KA, Phillips JB. Magnetic compass orientation in C57BL/6J mice. Learning & Behavior. 2006a;34(4):366–373. doi: 10.3758/BF03193201. PubMed DOI

Muheim R, Moore FR, Phillips JB. Calibration of magnetic and celestial compass cues in migratory birds—a review of cue-conflict experiments. Journal of Experimental Biology. 2006b;209(1):2–17. doi: 10.1242/jeb.01960. PubMed DOI

Müller CA, Schmitt K, Barber ALA, Huber L. Dogs can discriminate emotional expressions of human faces. Current Biology. 2015;25(5):601–605. doi: 10.1016/j.cub.2014.12.055. PubMed DOI

Newton KC, Kajiura SM. Magnetic field discrimination, learning, and memory in the yellow stingray (Urobatis jamaicensis) Animal Cognition. 2017;20(4):603–614. doi: 10.1007/s10071-017-1084-8. PubMed DOI

Oliveriusová L, Němec P, Pavelková Z, Sedláček F. Spontaneous expression of magnetic compass orientation in an epigeic rodent: the bank vole, Clethrionomys glareolus. Naturwissenschaften. 2014;101(7):557–563. doi: 10.1007/s00114-014-1192-0. PubMed DOI

Painter MS, Davis M, Ganesh S, Rak E, Brumet K, Bayne H, Malkemper EP, Phillips JB. Evidence for plasticity in magnetic nest-building orientation in laboratory mice. Animal Behaviour. 2018;138:93–100. doi: 10.1016/j.anbehav.2018.02.006. DOI

Phillips JB. Use of earth’s magnetic field by orienting cave salamanders (Eurycea lucifuga) Journal of Comparative Physiology. 1977;121(2):273–288. doi: 10.1007/BF00609616. DOI

Phillips RL, Mech LD. Homing behavior of a red fox. Journal of Mammalogy. 1970;51(3):621. doi: 10.1093/jmammal/51.3.621. DOI

Phillips JB, Muheim R, Jorge PE. A behavioral perspective on the biophysics of the light-dependent magnetic compass: a link between directional and spatial perception? Journal of Experimental Biology. 2010;213(19):3247–3255. doi: 10.1242/jeb.020792. PubMed DOI

Pryor K, Chase S. Training for variability and innovative behavior. International Journal of Comparative Psychology. 2014;27:361–368.

Range F, Virányi Z. Development of gaze following abilities in wolves (Canis Lupus) PLOS ONE. 2011;6(2):e16888. doi: 10.1371/journal.pone.0016888. PubMed DOI PMC

Richardson EH. The homing instinct in dogs. Psyche. 1921;2:52–56.

Ritz T, Thalau P, Phillips JB, Wiltschko R, Wiltschko W. Resonance effects indicate a radical-pair mechanism for avian magnetic compass. Nature. 2004;429(6988):177–180. doi: 10.1038/nature02534. PubMed DOI

Thalau P, Holtkamp-Rötzler E, Fleissner G, Wiltschko W. Homing pigeons (Columba livia f. domestica) can use magnetic cues for locating food. Naturwissenschaften. 2007;94(10):813–819. doi: 10.1007/s00114-007-0259-6. PubMed DOI

Vácha M, Půžová T, Drštková D. Effect of light wavelength spectrum on magnetic compass orientation in Tenebrio molitor. Journal of Comparative Physiology A. 2008;194(10):853–859. doi: 10.1007/s00359-008-0356-9. PubMed DOI

Virányi Z, Topál J, Gácsi M, Miklósi Á, Csányi V. Dogs respond appropriately to cues of humans’ attentional focus. Behavioural Processes. 2004;66(2):161–172. doi: 10.1016/j.beproc.2004.01.012. PubMed DOI

Voss J, Keary N, Bischof H-J. The use of the geomagnetic field for short distance orientation in zebra finches. NeuroReport. 2007;18(10):1053–1057. doi: 10.1097/WNR.0b013e32818b2a21. PubMed DOI

Walker MM, Bitterman ME. Honeybees can be trained to respond to very small changes in geomagnetic field intensity. Journal of Experimental Biology. 1989;145:489–494.

Wiltschko R, Wiltschko W. Magnetic orientation in animals. Berlin: Springer; 1995.

Wiltschko R, Wiltschko W. Magnetoreception: why is conditioning so seldom successful? Naturwissenschaften. 1996;83:241–247. PubMed

Wiltschko R, Wiltschko W. Avian navigation: from historical to modern concepts. Animal Behaviour. 2003;65(2):257–272. doi: 10.1006/anbe.2003.2054. DOI

Wiltschko W, Wiltschko R. Conditioning to magnetic directions. NeuroReport. 2007;18(10):949–950. doi: 10.1097/WNR.0b013e32818b2a38. PubMed DOI

Wilzeck C, Wiltschko W, Güntürkün O, Buschmann J-U, Wiltschko R, Prior H. Learning of magnetic compass directions in pigeons. Animal Cognition. 2010;13(3):443–451. doi: 10.1007/s10071-009-0294-0. PubMed DOI

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