CREATE TABLE `pet` (
  `DbId` int(11) NOT NULL auto_increment,
  `name` varchar(100) collate latin1_bin NOT NULL default '',
  `registration_DbId` int(11) NOT NULL default '0',
  `health` float unsigned NOT NULL default '0',
  `happiness` float unsigned NOT NULL default '0',
  `hunger` tinyint(4) unsigned NOT NULL default '0',
  `illness` tinyint(4) NOT NULL default '0',
  `points` int(11) NOT NULL default '0',
  `isCurrent` tinyint(4) NOT NULL default '0',
  `user_DbId` int(11) NOT NULL default '0',
  `petClass_DbId` int(11) default NULL,
  `item_DbId` int(11) NOT NULL default '0',
  `camp` tinyint(4) NOT NULL default '0',
  `timer` int(11) NOT NULL default '0',
  `gender` tinyint(4) NOT NULL default '1',
  `room_DbId` int(11) default NULL,
  `location_X` smallint(4) NOT NULL default '1',
  `location_Y` smallint(4) NOT NULL default '1',
  `rotation` tinyint(4) NOT NULL default '1',
  `webkinz_size` tinyint(4) NOT NULL default '1',
  `adoptionDate` date NOT NULL,
  PRIMARY KEY  (`DbId`),
  KEY `petClass_DbId` (`petClass_DbId`),
  KEY `user_DbId` (`user_DbId`),
  KEY `item_DbId` (`item_DbId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_bin AUTO_INCREMENT=112182;

SELECT p2.DbId, p2.happiness, p2.user_DbId, MAX( p1.timer ) AS t, count( p1.user_DbId )
FROM `pet` AS p1
INNER JOIN pet AS p2 ON ( p1.user_DbId = p2.user_DbId )
GROUP BY p1.user_DbId
HAVING t <1153713600

mysql> SELECT p2.DbId, p2.happiness, p2.user_DbId, count( p1.user_DbId )
    -> FROM `pet` AS p1
    -> JOIN pet AS p2 ON ( p1.user_DbId = p2.user_DbId )
    -> WHERE p2.user_DbId >140
    -> GROUP BY p1.user_DbId
    -> ORDER BY user_DbId
    -> LIMIT 0 , 30;
+------+-----------+-----------+-----------------------+
| DbId | happiness | user_DbId | count( p1.user_DbId ) |
+------+-----------+-----------+-----------------------+
|  473 |         0 |       141 |                     1 |
|  482 |         0 |       142 |                     4 |
|  493 |         0 |       143 |                     1 |
|  494 |         0 |       144 |                     1 |
|  495 |        80 |       145 |                     9 |
|  496 |         0 |       146 |                   729 |
|  497 |        50 |       147 |                   225 |
|  498 |         0 |       148 |                     1 |
|  500 |         0 |       149 |                     1 |
|  501 |         0 |       150 |                     4 |
| 1093 |         0 |       151 |                     1 |
|  504 |         0 |       153 |                     1 |
|  505 |         0 |       154 |                     1 |
|  506 |         0 |       155 |                     1 |
|  508 |         0 |       156 |                     1 |
|  513 |         0 |       157 |                     9 |
|  516 |         0 |       158 |                     1 |
|  517 |         0 |       159 |                     1 |
|  518 |         0 |       161 |                     4 |
|  522 |         0 |       163 |                    49 |
|  524 |         0 |       164 |                     1 |
|  525 |         0 |       165 |                    25 |
|  532 |         0 |       167 |                    25 |
|  535 |         0 |       168 |                     1 |
|  536 |         0 |       169 |                    64 |
|  540 |         0 |       170 |                     9 |
|  541 |         0 |       171 |                    81 |
|  542 |         0 |       172 |                     1 |
|  548 |         0 |       174 |                     9 |
|  551 |         0 |       175 |                    36 |
+------+-----------+-----------+-----------------------+