Could be something as simple as gas (which could just be gas caused by a new food, or by intestinal parasites), or it could be pneumonia. If it lasts more than a couple of days, get her in for an x-ray.
Katrina
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0.1 Iguana - Tiffel
1.2 Eastern Mud Turtles - Fred, Ethel, Edith
0.0.1 Giant Mex. Musk Turtle
Foster turtles: More than I'd like the husband to know about.

