Awe it is always so sad to lose a pet and especially one that has been a part of the family for so long. I am sure he had a wonderful life with you and will be greatly missed. Sorry for your loss.
So sorry to hear about your cat, but he'll be waiting for you over the rainbow bridge someday. 21 years is a great life for a cat, and he looks like he was well-loved, which is all we can hope for for our pets.
That's so very sad. I am so sorry about Chase. He got to live a nice long life with you and I'm sure you have allot of memories that you will treasure forever.
Such a hard thing to do but at times, the best thing you can do for your companion..... I had to do it twice within 6 months, to my beloved girls, spot 16 and agitha 14...... I now have their ashes forever......
Thinking of you during this difficult time...