"For a dog who loves to tear apart stuffed animals, make a durable activity ball with a Hol-ee rubber ball, scraps of fabric, and treats. When they pull all the fabric out, stuff it back in and start over :)" and we already have the ball! Cool!
what an awesome toy idea for rats (especially the girls)! take one Hol-ee dog toy ball, stuff with fabric strips, watch rats try to get all the fabric out. of course if you get a ball with big enough holes, your rats may just try to turn it into a nest, which is also fun.