I doubt very much "Chomper" died because the shrimp he ate wasn`t organic (I don`t think Wayne`s inferring that at all)!?
As has been mentioned by "varanus mad", the word "organic" doesn`t necessarily mean it`s free of preservatives, etc. I`ve heard feeding eggs leads to health problems too, another "overkill"; they would need to feed almost exclusively on them to develop problems. I`ve heard goldfish can never be fed either (yes they can), though I`m not suggesting they form a very regular or important (large) part of the diet.
Most captive Varanids die too soon because of poor conditions, not because they ate some supposedly "unhealthy" dietary items on occasion.
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