I always keep my stacks of narcotics and other precious stuff completely split. It May make a mess in my inventory, but when those bastards be thievin', I'm like "what ever".

An Ichty once took a stack of narcotics off a Therizino I had KO'ed. Nearly killed "my" tame. Ran out of narcotics - taming failed. Just another day on Ark :-)

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