Sorry to hear about your pup. Dogs are what people try to aspire to be, but people seldom ever hit that mark. It is tough for sure, my avatar is my first girl boxer Ellie, lost her at 12 1/2 in 2013. I think about her all the time. Even though she is gone I can't imagine not ever having her in my life and the wonderful memories and joy she brought to the family and friends. Thinking about her makes me smile. Hope your good times and memories with Casper will do the same for you.