There's a great line in The Truth About Cats & Dogs, when Janeane Garofalo's character--a veterinarian radio talk-show host--dispenses this advice to a caller: "You can love your cats and not love your cats." That scene came to mind upon viewing this hamster pedometer that actually keeps track of wheel rotations to ensure your pet furball is in peak physical condition.
Sadly, it's not the first such product. As Tokyomango notes, ahas been on the market for some time. (And don't get us started on those .)
If people were really serious about rodent fitness, they'd come up with something like a hamster-sized version of the "."