The only one I can think of besides my 7 year old kid is the pill bug (a.k.a. isopod, sow bug, rolly-polley) and only for defense not transportation.
What other animals roll themselves? Seems an efficient method of moving down hill.
Hoop-snakes! 
Armadillo?
Hedgehogs, again for protection rather than transport.
centipedes roll them selfs up…or is that millapedes…its one of the pedes
I’m 70% sure there is a creature that sits in tumbleweeds for transport, I kid you not. Lemme see if I can find it on the net.
<edit> okay, now I’m 10% sure. But I think the tumbleweed is an organism that rolls for transport. That’s how it spreads it’s seed or something.
ha and dung beatles some times ride there dung as transportation…does that count
All I can think of are those cool droids from Star Wars that roll up in a ball and then unfold and start shooting those big laser cannons. But I guess those aren’t animals.
A tortoise will roll if it slips down a hill!
Don’t hedgehogs roll up? Or maybe thats just in cartoons…
animals that roll
Don’t forget me!
dude, dorfhead already got you.
In the Namib Desert of Africa lives the White Lady Spider, which can tuck its legs partway up and cartwheel down the slope of a sand dune. I first learned about this creature from a beautiful National Geographic documentary called The Living Sands of Namib, which aired on PBS way back in the late 70’s. I devoured this kind of programming as a kid, and saw this show two or three times when it was rerun. The rolling spider sounds like one of those hoop-snake folk legends, but I remember the scene vividly because it was so dang freakin’ cool.
Welcome to the weird and wonderful world of woodlice!
These also roll:
are you mean droid-dekas
they ride other animal’s dung
My dog rolls up during storms
There were creatures in the book The Golden Compass. They had a hook that they inserted into these spheres that grew in a tree. They cruised.
Northern Lights, The Subtle Knife, and The Amber Spyglass 
the answer is : marsupilami franquini
yeha Dorfman they are milipedes
These animals rock too…
