maybe they needed venom of snakes from specific areas ? or there was questionable lineage in captive bread animals that they cannot risk having alter the results(ie. hybrids). I am just guessing here. as for the guy running around the jungle catching animals, why bother pay for the animals , there upkeep and liability when nothing stops you from running around getting them for free. (plus its way more exciting, not only for him but for viewers as well

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Devon