When I see an interesting GIF, I tap and hold on it to save. The GIF will then be saved to the Camera Roll. But the problem is, I'm not able to view it. The GIF now is just a static image.
Can I view it without installing a third-party software? If I have to, which app is the best for this purpose?

I didn't find the right solution from the Internet.

-References
-http://www.techrepublic.com/forums/discussions/how-can-i-view-gif-images-on-my-iphone/

-AntiVirus Video