Product review (5 stars): Ferrets love it!!
Purchased for my ferrets. They have a much longer tunnel as well, but they love this one because they can see each other through it. They love it when I tie it up, kind of like a pretzel. Ferret owners, do take note though, it's not a good tube for attaching to a cage -- a determined ferret could easily chew their way out. It's a perfect toy, though!