| 
                 
                    Closing price on 8/7/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.20 | 
                 
                
                    | High | 
                    12.20 | 
                 
                
                    | Low | 
                    12.10 | 
                     
                
                    | Volume | 
                    18,760 | 
                                 
                
                    | Split-adjusted Price | 
                    3.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PET Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/7/2012
             | 
            
                -0.10 / -0.82%
             |             
            
                12.20
             |           
            
                12.20
             |               
            
                12.10
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                18,760
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2012
             | 
            
                +0.20 / +1.67%
             |             
            
                12.00
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                3.84
             |                                 
            
                71,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.90
             |           
            
                12.10
             |               
            
                11.80
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                3.77
             |                                 
            
                37,990
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2012
             | 
            
                +0.10 / +0.84%
             |             
            
                12.00
             |           
            
                12.10
             |               
            
                11.90
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                3.77
             |                                 
            
                35,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.90
             |           
            
                12.10
             |               
            
                11.80
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                3.74
             |                                 
            
                106,450
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2012
             | 
            
                -0.10 / -0.83%
             |             
            
                12.10
             |           
            
                12.10
             |               
            
                11.90
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                3.74
             |                                 
            
                77,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2012
             | 
            
                -0.10 / -0.83%
             |             
            
                12.10
             |           
            
                12.20
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                3.77
             |                                 
            
                73,070
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2012
             | 
            
                -0.20 / -1.63%
             |             
            
                12.30
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                262,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2012
             | 
            
                +0.20 / +1.65%
             |             
            
                12.30
             |           
            
                12.30
             |               
            
                12.10
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                3.87
             |                                 
            
                67,740
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2012
             | 
            
                0.00 / 0.00%
             |             
            
                12.10
             |           
            
                12.20
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                194,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2012
             | 
            
                -0.20 / -1.63%
             |             
            
                12.10
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                168,610
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2012
             | 
            
                -0.50 / -3.91%
             |             
            
                12.70
             |           
            
                12.90
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                3.87
             |                                 
            
                325,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2012
             | 
            
                +0.10 / +0.79%
             |             
            
                12.90
             |           
            
                12.90
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                4.02
             |                                 
            
                405,470
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2012
             | 
            
                +0.50 / +4.10%
             |             
            
                12.40
             |           
            
                12.70
             |               
            
                12.20
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                3.99
             |                                 
            
                387,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2012
             | 
            
                -0.10 / -0.81%
             |             
            
                12.30
             |           
            
                12.50
             |               
            
                12.10
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                3.84
             |                                 
            
                189,190
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2012
             | 
            
                +0.20 / +1.65%
             |             
            
                12.00
             |           
            
                12.50
             |               
            
                12.00
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                3.87
             |                                 
            
                173,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2012
             | 
            
                -0.10 / -0.82%
             |             
            
                12.00
             |           
            
                12.30
             |               
            
                11.90
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                207,590
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2012
             | 
            
                +0.40 / +3.39%
             |             
            
                11.70
             |           
            
                12.20
             |               
            
                11.70
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                3.84
             |                                 
            
                334,980
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2012
             | 
            
                +0.10 / +0.85%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.60
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                3.71
             |                                 
            
                125,850
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2012
             | 
            
                +0.20 / +1.74%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.50
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                3.68
             |                                 
            
                98,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2012
             | 
            
                0.00 / 0.00%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                3.62
             |                                 
            
                120,860
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2012
             | 
            
                -0.40 / -3.36%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                3.62
             |                                 
            
                404,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2012
             | 
            
                +0.20 / +1.71%
             |             
            
                11.70
             |           
            
                12.10
             |               
            
                11.70
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                3.74
             |                                 
            
                189,750
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2012
             | 
            
                +0.20 / +1.74%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                3.68
             |                                 
            
                345,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2012
             | 
            
                +0.10 / +0.88%
             |             
            
                11.40
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                3.62
             |                                 
            
                410,910
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2012
             | 
            
                -0.60 / -5.00%
             |             
            
                11.40
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                3.58
             |                                 
            
                1,652,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2012
             | 
            
                -0.10 / -0.83%
             |             
            
                12.10
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                3.77
             |                                 
            
                250,490
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2012
             | 
            
                +0.10 / +0.83%
             |             
            
                12.10
             |           
            
                12.20
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                3.80
             |                                 
            
                123,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
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