So sorry to hear this...teared up as soon as I started reading...(by the title I was hoping it was something along the lines of if you had one last hunt what would it be). Not much worse than losing your best hunting partner...my condolences.
"A dog does not live as long as a man and this natural law is the fount of many tears. If boy and puppy might grow old together, and together grow old, and so in due course die, full many a heartache might be avoided. But the world is not so ordered, and dogs will die and men will weep for them so long as there are dogs and men."