OP - I'm seriously sorry for your loss.....must be a horrific experience.
However, in my opinion your should forget all this talk of harvesting sperm and getting him stuffed. The best thing you can do is grieve for a while, then go and get another dog from a rescue center. There are plenty of dogs out there looking for a home - and they're all special in their own way. Instead of trying to hang on to your lost friend, wouldn't it be nicer to know you're rescuing another dog and giving him a great life too?
However, in my opinion your should forget all this talk of harvesting sperm and getting him stuffed. The best thing you can do is grieve for a while, then go and get another dog from a rescue center. There are plenty of dogs out there looking for a home - and they're all special in their own way. Instead of trying to hang on to your lost friend, wouldn't it be nicer to know you're rescuing another dog and giving him a great life too?