Quality in big prints

I have a picture I am particulary pleased with. I'm not sure it has any great artistic merit, but I liked it enough to want a big print. I should mention the reason I'm posting it here, rather than on another section is that it was taken with a Fuji S9600. I took it to the local 'Staples' store and had it printed at 24"x32" and I have to say, it looks great. I had my doubts about what quality to expect from such an enlargement, but I'm blown away by it. Just wished I had had the K20 on that shoot. I just never thought you could blow up a picture to such a size from such a small sensor, and still get good results.

We had a headshot of one of our late dogs wearing sunglasses printed up at 24"x32" which was taken on our old Sony Cybershot. it wouldn't win any awards but the quality was surprisingly good