Honestly, I haven't read all the posts on the subject. This may have already been mentioned. If it has I apologize.
Previously I made light, I said "maybe the rats came from China".
In a way that's a possibility. What if the food the rats had eaten came from China? We've all heard of the Melamine contaminated dog and catfood from China, haven't we. What is the primary diet for snake food rodents? Dog kibble, as cheap and as high a protien content as is possible. Why did the Chinese put Melamine in their dog and cat food products in the first place? To artificially raise the protien content at a cheaper cost.
Looking back at the chronology of things, it's entirely possible the rats were fed some bad feed from China; not enough to kill them, but enough to do harm to the snakes that consumed those rodents. It's also possible dead and dying rats were culled daily and frozen. The producer doesn't want to throw his investment away, if he doesn't have to.
Well?
jsc




