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. 2013 Sep 19;8(9):e75725. doi: 10.1371/journal.pone.0075725

Figure 8. Example thermal images of pups and nest.

Figure 8

A. Newborn (PND 2) pups latched on and suckling from dam. Thermal imaging analysis with increased degree of white correlating with increased heat reveals that the exothermic pups exhibit at this age a higher body temperature than the dam. B. Thermal image of nest temperature that was measured to determine the impact of biparental care. Thermal imaging analysis of representative pups at PND 2 (C), PND 10 (D), PND 20 (E), and PND 30 (prior to weaning, F). Panels C-F reveal that the pup body temperature decreases significantly from PND 2 to PND 20 (P < 0.0001).