I will agree, you just "know" when it's time. Our chesapeake bay retriever, Peach gave us the look that said "I'm tired and ready to go. Thanks, mom and dad for everything." We took her the following day. Absolutely the saddest day, but it was the right thing to do.

I will also attest to what Logan said - the people here at PetTalk are wonderful at helping a person deal with a situation like this because many of them have been there.

How wonderful that you both had five great years together. My prayers are with you and pup at this time.