Pixelpersa has a cute dog and penguin up for free adoption. Tap the fish to feed it to the penguin. Now try tapping the dog. There are 3 different backgrounds and you can choose a pet color. Then just copy/paste the code to your site.
The purple hippo is an mp3 player but I don't know where to get a url for mp3 so I can't use it but it's still too cute not to include here. Try clicking the play button.