The Snapshot icon.
The Snapshot icon allows players to take in-game Screenshots of their Pets while in their houses. From here images can be shared to your facebook page so your friends can see. Or you can submit an image into a weekly/monthly contest to see who's house looks the prettiest, these images are usually featured on the Happy Pets Official Facebook page or on the Happy Pets opening screen.
After the subscription update, this feature is unfortunately no longer available.
R.I.P
