Animated JPEG?

This is weird:

Just a cute picture picture of a dog and a kid

, right?

Absolutely, animated and all. But check out the file name extension: *.jpg. An animated JPEG? Google that and you’ll find lots of seemingly authoritative statements that such a thing isn’t possible.

Download it and it displays in Windows picture viewer as animated, although the speed is quite a bit slower.

Strange.

(Original found here.)