I've been trying to think of a cartoon that had a group of bears or animals that rolled into a ball to move around... My sister had a few of the toys when she was little...

These weren't bears
But
Maybe,.

Popples

They seem to be some sort
Of colorful magical marsupials

view intro (http://www.youtube.com/watch?v=IDFG2dI6y0I)

Foxy Fables
http://www.youtube.com/watch?v=XWHn0uVPKUQ