| 
                 
                    Closing price on 1/8/2009
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    14.60 | 
                 
                
                    | High | 
                    14.70 | 
                 
                
                    | Low | 
                    14.40 | 
                     
                
                    | Volume | 
                    33,080 | 
                                 
                
                    | Split-adjusted Price | 
                    3.24 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PET Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/8/2009
             | 
            
                -0.40 / -2.70%
             |             
            
                14.60
             |           
            
                14.70
             |               
            
                14.40
             |                           
            
                14.40
             | 
            
                14.40
             |                     
            
                3.24
             |                                 
            
                33,080
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2009
             | 
            
                +0.30 / +2.07%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.60
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                3.33
             |                                 
            
                104,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2009
             | 
            
                +0.20 / +1.40%
             |             
            
                14.30
             |           
            
                14.60
             |               
            
                14.30
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                3.26
             |                                 
            
                79,210
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2009
             | 
            
                0.00 / 0.00%
             |             
            
                14.30
             |           
            
                14.30
             |               
            
                14.00
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                25,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/2/2009
             | 
            
                +0.10 / +0.70%
             |             
            
                14.20
             |           
            
                14.50
             |               
            
                14.20
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                45,330
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2008
             | 
            
                -0.40 / -2.74%
             |             
            
                14.60
             |           
            
                14.60
             |               
            
                14.20
             |                           
            
                14.20
             | 
            
                14.20
             |                     
            
                3.19
             |                                 
            
                60,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2008
             | 
            
                +0.30 / +2.10%
             |             
            
                14.30
             |           
            
                14.80
             |               
            
                14.30
             |                           
            
                14.60
             | 
            
                14.60
             |                     
            
                3.28
             |                                 
            
                105,740
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2008
             | 
            
                -0.20 / -1.38%
             |             
            
                14.30
             |           
            
                14.60
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                77,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2008
             | 
            
                +0.20 / +1.40%
             |             
            
                14.10
             |           
            
                14.60
             |               
            
                14.10
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                3.26
             |                                 
            
                54,130
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2008
             | 
            
                -0.20 / -1.38%
             |             
            
                14.60
             |           
            
                14.80
             |               
            
                14.20
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                43,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2008
             | 
            
                -0.30 / -2.03%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.40
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                3.26
             |                                 
            
                47,470
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2008
             | 
            
                -0.60 / -3.90%
             |             
            
                14.90
             |           
            
                14.90
             |               
            
                14.70
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                3.33
             |                                 
            
                164,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2008
             | 
            
                +0.70 / +4.76%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                15.00
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                3.46
             |                                 
            
                258,030
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2008
             | 
            
                +0.70 / +5.00%
             |             
            
                14.00
             |           
            
                14.70
             |               
            
                14.00
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                3.30
             |                                 
            
                209,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2008
             | 
            
                -0.30 / -2.10%
             |             
            
                14.00
             |           
            
                14.40
             |               
            
                13.80
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                3.15
             |                                 
            
                82,110
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2008
             | 
            
                0.00 / 0.00%
             |             
            
                14.30
             |           
            
                14.70
             |               
            
                13.80
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                77,980
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2008
             | 
            
                -0.70 / -4.67%
             |             
            
                14.50
             |           
            
                14.50
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                55,750
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2008
             | 
            
                +0.70 / +4.90%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.00
             |                           
            
                15.00
             | 
            
                15.00
             |                     
            
                3.37
             |                                 
            
                147,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2008
             | 
            
                +0.60 / +4.38%
             |             
            
                14.30
             |           
            
                14.30
             |               
            
                14.10
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                3.21
             |                                 
            
                128,380
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2008
             | 
            
                +0.20 / +1.48%
             |             
            
                13.50
             |           
            
                13.80
             |               
            
                13.50
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                3.08
             |                                 
            
                75,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2008
             | 
            
                -0.40 / -2.88%
             |             
            
                13.90
             |           
            
                13.90
             |               
            
                13.40
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                3.03
             |                                 
            
                49,540
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2008
             | 
            
                +0.60 / +4.51%
             |             
            
                13.30
             |           
            
                13.90
             |               
            
                13.30
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                3.12
             |                                 
            
                101,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2008
             | 
            
                -0.60 / -4.32%
             |             
            
                13.40
             |           
            
                13.80
             |               
            
                13.30
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                2.99
             |                                 
            
                85,110
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2008
             | 
            
                -0.50 / -3.47%
             |             
            
                14.40
             |           
            
                14.40
             |               
            
                13.80
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                3.12
             |                                 
            
                85,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/4/2008
             | 
            
                +0.60 / +4.35%
             |             
            
                14.20
             |           
            
                14.40
             |               
            
                14.00
             |                           
            
                14.40
             | 
            
                14.40
             |                     
            
                3.24
             |                                 
            
                206,840
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2008
             | 
            
                +0.50 / +3.76%
             |             
            
                13.50
             |           
            
                13.80
             |               
            
                13.30
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                3.10
             |                                 
            
                76,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/2/2008
             | 
            
                -0.70 / -5.00%
             |             
            
                13.40
             |           
            
                13.70
             |               
            
                13.30
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                2.99
             |                                 
            
                128,040
             |            
            
                 
             |                                       
         
    
        
            | 
                12/1/2008
             | 
            
                -0.20 / -1.41%
             |             
            
                14.20
             |           
            
                14.40
             |               
            
                13.70
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                3.15
             |                                 
            
                117,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/28/2008
             | 
            
                +0.60 / +4.41%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                14.00
             |                           
            
                14.20
             | 
            
                14.20
             |                     
            
                3.19
             |                                 
            
                325,370
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2008
             | 
            
                -0.70 / -4.90%
             |             
            
                14.00
             |           
            
                14.20
             |               
            
                13.60
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                3.06
             |                                 
            
                131,140
             |  
            
                 
             |                                                              
             
    
         
    
    
 |