John, E. R., Chesler, P., Bartlett, F., & Victor, I. (1968). Observation Learning in Cats. Science, 159(3822), 1489–1491.
Abstract: In two experiments cats acquired a stimulus-controlled approach or avoidance response by observational or conventional shaping procedures. Observer cats acquired the avoidance response (hurdle jumping in response to a buzzer stimulus) significantly faster and made fewer errors than cats that were conventionally trained. Observer cats acquired the approach response (lever pressing for food in response to a light stimulus) with significantly fewer errors than cats that were conventionally trained. In some cases, observer cats committed one or no errors while reaching criterion.
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Rossdale Pd,. (1968). Abnormal perinatal behaviour in the thoroughbred horse. Brit Vet J., 124, 540–553.
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Zeeb K,. (1968). Paarungsverhalten von Rind und Pferd im Herdenverband. Z Tierzüchtung Züchtungsbiol, 84, 229–235.
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Klingel H,. (1968). Die Immobilisation von Steppenzebras. Zoolog Garten, 35, 54–66.
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Mrosovsky, N., & Shettleworth, S. J. (1968). Wavelength preferences and brightness cues in the water finding behaviour of sea turtles. Behaviour, 32(4), 211–257.
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Salzen, E. A., & Cornell, J. M. (1968). Self-perception and species recognition in birds. Behaviour, 30(1), 44–65.
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Klingel, H. (1968). Sozial Organisation und Verhaltensweisen von Hartmann- und Bergzebras (Equus zebra hartmannae und E. z. zebra). Z. Tierpsychol., 25, 76–88.
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Tavernor, W. D., & Lees, P. (1968). A pharmacological investigation of the influence of suxamethonium on cardiac function in the horse. Experientia, 24(6), 582–583.
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Alexander, F., & Nicholson, J. D. (1968). The blood and saliva clearances of phenobarbitone and pentobarbitone in the horse. Biochem Pharmacol, 17(2), 203–210.
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Rossdale Pd,. (1968). Perinatal behaviour int the thoroughbred horse. (Vol. Chapt. 15).
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