How can we improve the existing moving creatures of Minecraft? Show us your coolest fantasy creatures. We are very interested in ideas that are unique and not just lists of mobs!

I think that there has been a lot of change to slimes over the years.  For example, they can already swim, multiply, bounce, and more.  However, I think it would make more sense if slimes didn't take fall damage.  After all, wouldn't slimes just absorb the fall?  I'm okay with them splitting or bouncing on impact, just not getting hurt.