Luckily there are no rules about the preview images at PJ, and it is relevant too. If you check out my gallery you will find some more examples of totally different previews (even way more different than this one)

I challenge you to make interesting previews for your work too :)

Not that I mind though... you're just lucky that it passed, I guess X^D

Yes, that is true......

Preview is totally different from the true pic.

Very well done.

Who says old dogs can't learn new tricks? Smooth animation 

 Very funny and cute!

Thanks for mentioning, I think I finally solved all the problems >.<

Very smooth! But the white of the eye has gone transparent

Really smooth animaton, nice work.

 lol, I like it :)

Yep, I agree with all of you guys the other animations are lame and rushed, but it feels silly to throw them away so I will keep it like this.

EDIT: ok changed it, now it is on the FP for at least a few more minutes cuz the preview is smaller too....

 The animation on the ball itself is amazing. I love this! The only thing bugging me is the flipping of the tail when the dog moves forward on the ball. But I'm pretty sure this thing will have my vote.

Haha! Really funny and well executed :)

 The eyes on the dog are a little disturbing. They look a little better on the preview.

Saw this one in the challenge thread, that final version is very cool :) However, I agree with Jeremy, the part with the dog on the ball is even better than the 2 others. 

I noticed the eye in the preview is transparent, is it related to the weight reduction?

To be honest I prefer the preview to the detail. Dog on ball is very nicely animated, I don't think the other 2 "scenes" are as good; don't add much.

10,5 kb... why am I not able to get this smaller? Anybody who compresses the preview succesfully under 10kb gets a cookie!