Still struggling with complex data structures

Apologies The %pets should be built from a loop thru the @info. The desired structure of the %pets is {scalar}{scalar}{array}{array} with no duplicated element in the {array} fields. The serves to summarize the data with no duplicates. The desired output would then to list the contents of each $pets{first}{last}{species}{color} on its own line, the combination {first}{last} is unique for the hash. The 2 arrays should be populated such that duplicate elements are discarded for each {first}{last} key combination. This desired summarization is reflected in the desired output example. I have struggled with this little task for a couple of days now - my expertise is not quite sufficient enough yet ... but soon 

#!/usr/bin/perl -w
use strict;
# small snippet to explore dealing with complex data structures and du
+plicates/uniques and consolidation
my %pets;
my @info;
#() below only signify that multiple elements possible in 3rd and 4th 
+elements of $info[i]
my $a ='Mary,Owens,"cat","white"';
my $b ='Bill,Thompson,"cat,dog","white,black"';
my $c ='Bill,Thompson,"hamster,cat","black,brown"';
my $d ='Bill,Smith,"goldfish,dog,turtle","yellow,spotted,green"';

push @info,$a,$b,$c,$d;

#how to organize this data and loop thru to populate %pets from @info 
+and extract output as below  This is the part that I struggle with

exit;

[download]
# Desired output from printing %pets: single line with unique elements
+ for #the species and color arrays and fields separated by ":"

#"Mary":"Owens":"cat":"white"
#"Bill":"Thompson":"cat","dog","hamster":"white","black","brown"
#"Bill":"Smith":"goldfish","dog","turtle":"yellow","spotted","green"

[download]

In reply to Struggling with complex data structures and doing useful operations on their elements and populating from arrays by hiyall

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.