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. 2018 Apr 18;8:6174. doi: 10.1038/s41598-018-24579-6

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Magnitude of color change in crocodylians. (A) Analysis of dynamic color change in the Philippine crocodile. Animals acclimated to black tanks were placed in white environments and the color was measured every 30 min until stable. Animals were then placed back into black tanks and skin color was measured every 30 min until stable. *Significance from measurement at time zero. Color change of sibling Philippine (B) and Morelet’s (C) crocodiles after three hours in white tanks. The animals that appear darker in color were maintained in black tanks for three hours.