animated GIF is an amazing 25 years old!
Check out the history of the GIF and celebratory animations on the Daily Dot, or celebrate the day by arguing whether or not GIF is pronounced with a hard or soft ‘G’. Me, I’m going to go searching for some more cat animations.
ETA: I was so preoccupied looking at all the animated GIFs, I screwed up this post: all GIFs are 25 years old, not just the animated variety. Oops!