I made some .cow files anyone may like.

gaucho_hacker.cow:

$the_cow = <<"EOC";
   $thoughts
    $thoughts    _________
         |        |                   ________
     ____|________|____       ~      |        \\
        //// _____)              ~   ||        \\_____
        _|   (o)(o)           ~    ~ ||              \\
       (o        \\|              ~   ||               \\
         |     (..)           ~    ~ ||                \\
         |    /||||\\             ~   ||                 |
         | \\     \\\\           ~    ~ |                  |
        /|  -----_\\\\__           ~   |___________----|--+
       /  \\__/_ )    ( ______ ~____      ======      wwwww8 
      / +___   (/|    )______||_--\\\\--+  -                8
     /      +--- +- \\/        /________|wwwwwwwwwwwwwwwwww8
    |________---____/
EOC

peron.cow

$the_cow = <<"EOC";
        $thoughts
         $thoughts  ,_____._____
     ,_.    /-_---------_\\
    /  |   ||           ||        /\\
   /  <    \\|.__.   .__.|/       | l
  |    /    |E==<   E==<|      n J |
  |  /     G|    | |    |D     \\   |
  | |      \\|  , q_p ,  |J     _|__/_
 ====       | /._____.\\ |      |\\__/|
 |   |      (   \\___J   )      |    |
 |   |      (  =.___- = )     /    /
 |   |       (.__-___,)      /    /
  \\   |____----+   |________/    /
   \\        \\   \\/   _/        /
    \\_____   \\  /   /   ______/
EOC

17oct.cow

$the_cow = <<"EOC";
 $thoughts
  $thoughts           _______
  \\o/        \\ peron \\     ---------
------+       \\-------    | C  G  T |
:::::::::::::::\\::::::::::|---------|:::::::::::
%%%%%%%%%%%%%%%%\\%%%%%%%%%|%%%%%%%%%|%%%%%%%%%%%
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
oooooooooooooooooooooooooooooooooooooooooooooooo