Create new anonymous hashes if you want the structures to be independent: 
my %hash3 = (
    plants    => {%hash1},
    animals   => {%hash2},
);

my %hash4 = (
    plants    => {%hash1},
    animals   => {%hash2},
);

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In reply to Re: Initial Hash of Hash by value by wind
in thread Initial Hash of Hash by value by Anonymous Monk

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