Chinese soft-shelled turtles pass waste through their mouths, scientists in Singapore have found.
Biologists were puzzled by the turtle's behaviour because, despite using its lungs to breathe air, it often submerges its head in water.
By testing the water, they found that the reptile was excreting urea through its mouth instead of its kidneys.
The discovery adds to previous research, which suggested the turtles have highly specialised mouth tissues.
http://www.bbc.co.uk/nature/19883278
Turtle passes waste urea through its mouth
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Still Waters
, Oct 11 2012 03:48 PM
turtles chinese soft-shelled mouth
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