Xenopus: frogs that are stitched together

I was grading papers tonight and I just thought that I would share with you the "fact" that I learned. FACT: Frogs use their blood to warm their body and therefore are warm-blooded mammals instead of amphibians. I just thought that you would be interested. Since you probably are of the old school class that thinks that frogs are amphibians. Well, frogs have just evolved. With this rapid pace, they make take over the world. So do yourself a favor, and kill a frog today.
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