Abstract
Three- to 5-month rhythms in a lesion-induced abnormal grooming behavior and thyroid activity of cats have been found. An analysis of the climatological data for the same period revealed similar rhythms in sunshine. The sunshine peaks preceded the thyroid activity peaks, and a cross correlation was significant with a temporal lag of 1 month.
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Randall, W. The behavior of clouds correlates with thyroid activity in cats. Psychon Sci 21, 270–271 (1970). https://doi.org/10.3758/BF03330710
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DOI: https://doi.org/10.3758/BF03330710