This should do what you want.

#!/usr/bin/perl -w
use strict;
use Data::Dumper;

my $first = <<'END';
name is Doug
eyes: brown
email at bill@hotmail.com
END

my $second = <<'END';
name is Fred
eyes: black
era: prehistoric
email at fflinstone@hotmail.com
END

sub parse {
    my $text = shift;
    my %info = ();
    while ($text =~ /
            ^               # start of line
            (\w+)           # a word
            [:\s]           # colon or space
            .*              # anything
            \s              # a space
            (\S+)           # a sequence of non spaces
            $               # till the end of line
            /xmg) {
        $info{$1} = $2;
    }
    return \%info;
}

for ($first, $second) {
    print Data::Dumper->Dump([parse($_)], ['info']),"\n";
}

__END__
$info = {
           'eyes' => 'brown',
           'email' => 'bill@hotmail.com',
           'name' => 'Doug'
         };
$info = {
           'eyes' => 'black',
           'era' => 'prehistoric',
           'email' => 'fflinstone@hotmail.com',
           'name' => 'Fred'
         };
[download]

You can assign the result from parse() to a hash reference and eventually build the structure that suits your needs best.