@Boingo, if I'm right, that article talks about how frogs CAN survive being frozen instead of can't.
In what manner? I'm pretty sure they didn't die of drowning, they could have been dead of many other reasons. I mean, technically a frog can drown, but that only happens if it is somehow pinned under the water and could not surface, in that case a whale or a dolphin would die too. Also, are you certain frogs are the only creatures you saw dead in that flood? If there were fishes, I'm sure there would have been dead fishes as well. If a fish can survive a flood, a frog can also, vice versa.