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. 2021 Aug 9;25(1):195–203. doi: 10.1007/s10071-021-01542-z

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© The Author(s) 2021

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Fig. 3 — Number of tortoises (%) with different sleeping position of the head (a), forelimbs (b), and hindlimbs (c). The pie charts show the % of tortoises sleeping with the head on the left or on the right, and with the right and the left limbs extended forward. Dark grey slices indicate % tortoises with head and limbs in a symmetrical position (Symm)