Hi guys, Before Gracie was Dx she was on the higher dose of Revolution. At one point she was 18lbs. A few months later she started dropping weight and became Dx with feline diabetes. I gave in, and bought 1 month supply of the lower weight dose. Now, it's time for her dose and I'm debating on whether or not I could give her half the dose for chubby cats. It just annoys me a little, as that is almost $100 wasted. Yes, I could donate to a shelter, but can I really not use? Vet said no and to buy some for the lower weight cats. But, she also doesn't suggest home testing either. The revolution for chubby cats starts at 15lbs.