#!/usr/bin/perl --
use strict;
use warnings;
use Data::Dump qw/ dd /;


dd( deeef( 'Cobra', 'Fox' ) );

#~ should return
#~ ( [qw[ Fox Canine Mammal ]],
#~   [qw[ Cobra Snake Reptile ]]
#~ )

sub deeef {
    my( @animals ) = @_;
    my %catcatdog = (
      Mammal  => {
                   Bovine => ["Cow", "Bison"],
                   Canine => ["Dog", "Fox", "Wolf"],
                   Equine => ["Horse", "Zebra", "Pony"],
                 },
      Reptile => {
                   Bird   => ["Pigeon", "Canary", "Owl"],
                   Lizard => ["Salamander", "Chameleon"],
                   Snake  => ["Python", "Cobra"],
                 },
    );
    my %dogcatcat;
    for my $cat ( keys %catcatdog ){
        for my $catcat ( keys %{ $catcatdog{ $cat } } ){
            for my $dog( @{ $catcatdog{$cat}{$catcat} } ){
#~                 $dogcatcat{$dog}{$cat}{$catcat}++;
#~                 $dogcatcat{$dog}{$catcat}++;
#~                 $dogcatcat{$dog}{$cat}++;
                push @{ $dogcatcat{$dog} }, $catcat, $cat, ;
            }
        }
    }
#~     return map {; [ $_, keys %{ $dogcatcat{$_} } ]  } @animals;
    return map {; [ $_, @{ $dogcatcat{$_} } ]  } @animals;
}