| 1. Fasting Pythons |
 Credit: Henrik Lauridsen and Kasper Hansen, MR Research Center, Aarhus University Hospital, Skejby, Denmark. |
Fasting Burmese pythons were scanned before and at two, 16, 24, 40, 48, 72 and 132 hours after ingestion of one rat. The succession of images revealed a gradual disappearance of the body of the rat, accompanied by an overall expansion of the snake's intestine, shrinking of the gallbladder, and a 25-percent increase in heart volume.
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| 2. Python Eating Three Rats |
 Credit: Henrik Lauridsen and Kasper Hansen, MR Research Center, Aarhus University Hospital, Skejby, Denmark. |
In one experiment, scientists fed a python three rats and watched as the snacks descended through the snake's gut and vanished.
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| 3. Python Eating One Rat |
 Credit: Henrik Lauridsen and Kasper Hansen, MR Research Center, Aarhus University Hospital, Skejby, Denmark. |
The scientists used magnetic resonance imaging and computed tomography to scan a python's body while the snake was eating a rat, showing the rat mid-way through the body as it was being digested.
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| 4. Cane Toad's Lungs |
 Credit: Henrik Lauridsen and Kasper Hansen, MR Research Center, Aarhus University Hospital, Skejby, Denmark. |
A live cane toad's lungs are captured in action with a computed tomography (CT) technique.
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| 5. Turtle Blood Vessels |
Credit: Henrik Lauridsen and Kasper Hansen, MR Research Center, Aarhus University Hospital, Skejby, Denmark.
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A live turtle's blood vessels are captured in action with a magnetic resonance imaging technique.
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| 6. Alligator Anatomy |
 Credit: Henrik Lauridsen and Kasper Hansen, MR Research Center, Aarhus University Hospital, Skejby, Denmark. |
A CT scan reveals the skeletal anatomy of a live alligator.
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| 7. Aligator MRI |
 Credit: MR Research Center, Aarhus University Hospital, Denmark. |
Scientists used MRI scanning to reveal the inner anatomy of an alligator. Contrasting agents were used to highlight specific organs in the MRI and computed tomography (CT) images.
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