Measure your dog's body fat

Obesity isn't just a health issue for ourselves, but for our pets also. As our society gets larger and larger our dogs are getting fat right along with us. So it makes sense that as you work for a healthier lifestyle and pounds lost you can take your dog along for that trend too. Whether you're putting Spot on a diet or taking him out with you walking (or both), now you can easily monitor how much progress he's making. There's a new handy body fat checker for dogs that will give you a reading just by touching it to the dog's back. So far it's only available in Japan, but I wonder if there's really a market for something like this over here? How often would you use it, honestly?