Originally Posted by
the other bob wilson
My lost cat will be three this month, so the ages are similar, but what the OP faces and what I have gone through with Felix are miles apart - even in ten years time, I'll still have that faint hope that he could come back or that he is having a great life with someone who has taken him in, but it's all so final for the OP and, from reading what he says, I think he knows that she has reached the point of no return.
Hopefully, she will start feeling better and will be able to prolong her life, but all I can say is that, in my experience, you instinctively know when it's time to let go of your pet - usually though, they have had lived a full and happy life, the OP, and Tuerto, have my full sympathy because that is is not the case with their pets, two and a half is barely out of puppyhood.
My reaction to the loss of a pet is to want to replace it quickly (even though I had my two cats at the time, I was surprised by how testing I found the three months between my last dog being put to sleep and getting my new puppy turned out to be), but everyone is different and there is no right or wrong thing to do when you have lost one - the OP should do what he and his family think best and, either way, I wish them all the best over the coming days and weeks.