An adult dwarf crocodile basking by the water's edge, mouth agape. Crocodiles often flip their legs (front and hind) partly or fully backwards when they are resting, and it is a common sign of relaxation in reptiles. If the reptile is disturbed, it will bring its limbs back into a more suitable position to move the body quickly, if that becomes necessary. This crocodile is also gaping, which serves two functions in crocodiles - the first as a way of cooling the head through evaporation of liquid from the tongue, combined with convective currents, and the second as a subtle way of warning potential threats that the croc doesn't want to be disturbed (opening the mouth exposes the teeth and the fleshy-coloured insides of the mouth).
Photograph © Adam Britton
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