| 
                 
                    Closing price on 6/28/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.00 | 
                 
                
                    | High | 
                    12.10 | 
                 
                
                    | Low | 
                    11.90 | 
                     
                
                    | Volume | 
                    153,470 | 
                                 
                
                    | Split-adjusted Price | 
                    3.77 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PET Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/28/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.00
             |           
            
                12.10
             |               
            
                11.90
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                3.77
             |                                 
            
                153,470
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2012
             | 
            
                -0.10 / -0.83%
             |             
            
                12.10
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                3.77
             |                                 
            
                141,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2012
             | 
            
                -0.10 / -0.82%
             |             
            
                12.20
             |           
            
                12.20
             |               
            
                11.90
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                295,710
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2012
             | 
            
                -0.30 / -2.40%
             |             
            
                12.30
             |           
            
                12.50
             |               
            
                12.10
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                3.84
             |                                 
            
                409,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                12.30
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                3.93
             |                                 
            
                422,020
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2012
             | 
            
                -0.10 / -0.79%
             |             
            
                12.50
             |           
            
                12.60
             |               
            
                12.50
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                3.93
             |                                 
            
                363,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2012
             | 
            
                +0.10 / +0.80%
             |             
            
                12.70
             |           
            
                12.70
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                3.96
             |                                 
            
                79,130
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2012
             | 
            
                -0.30 / -2.34%
             |             
            
                12.80
             |           
            
                13.00
             |               
            
                12.40
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                3.93
             |                                 
            
                164,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2012
             | 
            
                +0.50 / +4.07%
             |             
            
                12.80
             |           
            
                12.90
             |               
            
                12.60
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                4.02
             |                                 
            
                610,890
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2012
             | 
            
                -0.10 / -0.81%
             |             
            
                12.40
             |           
            
                12.70
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                3.87
             |                                 
            
                1,458,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2012
             | 
            
                -0.20 / -1.59%
             |             
            
                12.50
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                3.90
             |                                 
            
                582,460
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2012
             | 
            
                -0.10 / -0.79%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                3.96
             |                                 
            
                174,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2012
             | 
            
                -0.20 / -1.55%
             |             
            
                12.80
             |           
            
                12.90
             |               
            
                12.60
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                3.99
             |                                 
            
                297,630
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2012
             | 
            
                +0.20 / +1.57%
             |             
            
                12.80
             |           
            
                13.00
             |               
            
                12.70
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                4.06
             |                                 
            
                114,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2012
             | 
            
                -0.30 / -2.31%
             |             
            
                13.20
             |           
            
                13.30
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                3.99
             |                                 
            
                404,010
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2012
             | 
            
                +0.20 / +1.56%
             |             
            
                12.80
             |           
            
                13.20
             |               
            
                12.80
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                4.09
             |                                 
            
                428,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2012
             | 
            
                +0.40 / +3.23%
             |             
            
                12.40
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                4.02
             |                                 
            
                222,160
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2012
             | 
            
                +0.30 / +2.48%
             |             
            
                12.10
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                3.90
             |                                 
            
                239,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2012
             | 
            
                -0.40 / -3.20%
             |             
            
                12.10
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                588,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.60
             |           
            
                12.70
             |               
            
                12.50
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                3.93
             |                                 
            
                179,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2012
             | 
            
                -0.30 / -2.34%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.50
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                3.93
             |                                 
            
                249,160
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.70
             |           
            
                13.00
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                4.02
             |                                 
            
                101,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2012
             | 
            
                -0.10 / -0.78%
             |             
            
                12.70
             |           
            
                12.90
             |               
            
                12.60
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                4.02
             |                                 
            
                428,110
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2012
             | 
            
                +0.20 / +1.57%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                12.70
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                4.06
             |                                 
            
                224,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2012
             | 
            
                +0.60 / +4.96%
             |             
            
                12.50
             |           
            
                12.70
             |               
            
                12.40
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                3.99
             |                                 
            
                174,910
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2012
             | 
            
                -0.30 / -2.42%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                290,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2012
             | 
            
                -0.60 / -4.62%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.40
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                3.90
             |                                 
            
                335,520
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                13.00
             |           
            
                13.40
             |               
            
                12.80
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                4.09
             |                                 
            
                235,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2012
             | 
            
                +0.60 / +4.84%
             |             
            
                12.40
             |           
            
                13.00
             |               
            
                12.40
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                4.09
             |                                 
            
                471,780
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2012
             | 
            
                -0.60 / -4.62%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.40
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                3.90
             |                                 
            
                747,710
             |  
            
                 
             |                                                              
             
    
         
    
    
 |