Lut, I know how hard this is, but you have to think of Zazou's quality of life. You know, cats rarely let you know if they are in pain. Ask yourself... is she comfortable and enjoying her life?

I read some advice on the web about when to say goodbye, perhaps this will help you decide. If you decide to say goodbye, is it possible that the vet come to your house?

I send Zazou, you and your family love, comfort and hugs.


Do pursue every option to your satisfaction

If there's something that can be done, then pursue it. Understand that we all have our different financial constraints that we must operate under. And for each family there are different values. Each family is different and can only allocate so many resources. So knowing this, use your resources to do everything you can for the best quality of life as long as possible. This may include pursuing alternative treatments like acupuncture or herbal formulas, depending on the nature of what is ailing your kitty. If you have pursued all options the extent that you are able than that helps remove feelings of guilt.
Do evaluate if your cat is still having fun

What is your kitty's favorite thing to do? If she is still doing this and having fun, then the time has not come to put her down. For some families, things have changed slowly over time but it seems like their cat favorite thing to do is sleep or eat. These are not the quality activities he used to do as a kitten. Think of what behavior defines your cat - stalking a toy, playing get the mouse with your toes under the blanket, these are the things that say your cat still enjoys life.
Do accept that when it becomes time it is a loving decision

Because we love our kitties is why we even consider the euthanasia option. We don't want to see our four-legged baby suffer. But sometimes it is a hard decision as they cannot tell us directly that they are ready to go. Therefore we have to make the decision for them and we do it out of love.
Do celebrate life and the good times you shared

We share our lives with cats so it is a better place for both of us. So when the time comes, it honors our time together when we think about all of the good times. Lamenting what we perhaps could've done differently does not honor the bond - it weakens it. Cats share their lives with us to bring beauty; beauty comes with joy and happy memories.

Do not delay when the reason is for yourself


Some cat parents know that it is more than past time for their beloved kitty to pass on. But for some reason these people simply cannot let it happen. And they understand that this is something on the inside of them. They know their cat is asking to go, and they know their cat is not having fun anymore, But they can't make the decision. The other tips will help these families in this very hard decision.

Do not delay when it becomes clear that your cat is suffering


When it becomes obvious that it's time, gather your family quickly. There are veterinarians who will come to your house or the whole family can come to the veterinary clinic. Regardless, to best honor your beloved kitty, do it quickly so your baby has peace. It is not every situation where it becomes obvious that it's time all of a sudden, but when it does embrace it with love.

Do not blame your self


Part of the grieving process includes bargaining. We bargain with our memories and we chastise ourselves that maybe we should've done something differently. The past is done, it cannot be undone, therefore cherish the past and love your cat, and yourself, by not blaming yourself.

Here is a few more links:
http://www.vet.cornell.edu/fhc/Healt...on/goodbye.cfm

https://www.bluecross.org.uk/pet-advice/time-say-goodbye-your-cat