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                    Closing price on 1/6/2010
                 |  |  
    
        |           
                
                    | Open | 24.30 |  
                    | High | 25.10 |  
                    | Low | 24.20 |  
                    | Volume | 443,740 |  
                    | Split-adjusted Price | 5.80 |  
                
             | 
 |  PET Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/6/2010 | -0.40 / -1.61% | 24.30 | 25.10 | 24.20 | 24.40 | 24.40 | 5.80 | 443,740 |   |  
            | 1/5/2010 | +0.70 / +2.90% | 25.30 | 25.30 | 24.20 | 24.80 | 24.80 | 5.89 | 669,170 |   |  			
            | 1/4/2010 | +1.10 / +4.78% | 23.60 | 24.10 | 23.60 | 24.10 | 24.10 | 5.73 | 500,820 |   |  
            | 12/31/2009 | -0.20 / -0.86% | 23.70 | 23.80 | 23.00 | 23.00 | 23.00 | 5.47 | 653,010 |   |  			
            | 12/30/2009 | +0.40 / +1.75% | 22.80 | 23.70 | 22.80 | 23.20 | 23.20 | 5.51 | 554,540 |   |  
            | 12/29/2009 | -0.20 / -0.87% | 22.80 | 23.50 | 22.70 | 22.80 | 22.80 | 5.42 | 401,430 |   |  			
            | 12/28/2009 | -0.10 / -0.43% | 23.50 | 24.10 | 22.80 | 23.00 | 23.00 | 5.47 | 878,220 |   |  
            | 12/25/2009 | +1.10 / +5.00% | 23.10 | 23.10 | 23.10 | 23.10 | 23.10 | 5.49 | 132,820 |   |  			
            | 12/24/2009 | +1.00 / +4.76% | 21.00 | 22.00 | 20.50 | 22.00 | 22.00 | 5.23 | 572,590 |   |  
            | 12/23/2009 | +0.20 / +0.96% | 20.50 | 21.50 | 20.50 | 21.00 | 21.00 | 4.99 | 299,100 |   |  			
            | 12/22/2009 | +0.80 / +4.00% | 20.90 | 21.00 | 20.10 | 20.80 | 20.80 | 4.94 | 705,740 |   |  
            | 12/21/2009 | +0.90 / +4.71% | 19.90 | 20.00 | 19.80 | 20.00 | 20.00 | 4.75 | 242,660 |   |  			
            | 12/18/2009 | +0.90 / +4.95% | 18.50 | 19.10 | 18.50 | 19.10 | 19.10 | 4.54 | 872,310 |   |  
            | 12/17/2009 | -0.70 / -3.70% | 18.00 | 19.00 | 18.00 | 18.20 | 18.20 | 4.33 | 374,890 |   |  			
            | 12/16/2009 | -0.90 / -4.55% | 18.90 | 19.30 | 18.90 | 18.90 | 18.90 | 4.49 | 372,950 |   |  
            | 12/15/2009 | -0.50 / -2.46% | 19.70 | 20.30 | 19.50 | 19.80 | 19.80 | 4.71 | 222,570 |   |  			
            | 12/14/2009 | +0.50 / +2.53% | 19.70 | 20.40 | 19.00 | 20.30 | 20.30 | 4.82 | 636,250 |   |  
            | 12/11/2009 | -1.00 / -4.81% | 20.30 | 20.40 | 19.80 | 19.80 | 19.80 | 4.71 | 280,990 |   |  			
            | 12/10/2009 | -1.00 / -4.59% | 22.30 | 22.30 | 20.80 | 20.80 | 20.80 | 4.94 | 297,070 |   |  
            | 12/9/2009 | -1.10 / -4.80% | 21.80 | 22.00 | 21.80 | 21.80 | 21.80 | 5.18 | 358,670 |   |  			
            | 12/8/2009 | -0.40 / -1.72% | 23.30 | 23.30 | 22.50 | 22.90 | 22.90 | 5.44 | 161,840 |   |  
            | 12/7/2009 | 0.00 / 0.00% | 23.30 | 23.50 | 22.90 | 23.30 | 23.30 | 5.54 | 166,520 |   |  			
            | 12/4/2009 | -0.10 / -0.43% | 23.50 | 23.60 | 23.00 | 23.30 | 23.30 | 5.54 | 142,860 |   |  
            | 12/3/2009 | -0.40 / -1.68% | 23.90 | 24.00 | 22.70 | 23.40 | 23.40 | 5.56 | 281,960 |   |  			
            | 12/2/2009 | -1.20 / -4.80% | 24.10 | 25.00 | 23.80 | 23.80 | 23.80 | 5.66 | 252,830 |   |  
            | 12/1/2009 | +0.50 / +2.04% | 25.00 | 25.60 | 24.90 | 25.00 | 25.00 | 5.94 | 292,220 |   |  			
            | 11/30/2009 | +1.00 / +4.26% | 23.50 | 24.50 | 23.50 | 24.50 | 24.50 | 5.82 | 245,350 |   |  
            | 11/27/2009 | -0.10 / -0.42% | 22.50 | 24.70 | 22.50 | 23.50 | 23.50 | 5.58 | 525,530 |   |  			
            | 11/26/2009 | -1.20 / -4.84% | 23.60 | 23.70 | 23.60 | 23.60 | 23.60 | 5.61 | 192,820 |   |  
            | 11/25/2009 | -1.30 / -4.98% | 25.80 | 25.80 | 24.80 | 24.80 | 24.80 | 5.89 | 415,940 |   |  |