That is sad 2JD. I have five pets (2 dogs, 3 cats) living at my parents house. I've also lost 2 along the way (1 cat, 1 dog), so I know how hard it can be. They are part of the family after all. At least they both lived a full life...
One of my cats is about 14 now, so I guess he's nearing the end. I only see them when I see my family these days...maybe once a fortnight, or a week if lucky.
It's part of life I guess, but bad luck all the same.