Chloe was about 115lbs and the breed standard for a female Golden is 65lbs! Chloe is very big-boned though and taller and broader than most male Goldens that I've seen. There is no way I could get her down that much without starving her death.
I talked to a Golden breeder, who's the founder of Golden rescue in Austin, and she told me to cut her kibble in half and substitute the other half for green beans. They're a great filler and a half a can is only 20 calories.
I buy regular store-bought green beans, with no sugar/no salt and she gets a half a can of those and a half a cup of kibble twice a day. I can tell she's lost weight, but I don't know how much. I can already feel ribs now, but she still has no waist.
At first it was tough, because she does what I call "the stare" and it drives me nuts. She needs to eat earlier in the day now, but she's getting better about adjusting to the lower food intake. The first two weeks were tough.
My goal is to take at least 20lbs off of her, as this is the weight my vet in Destin said I needed to get her down to.
ETA: Here's scary statistics: It's better for a dog to be underweight than overweight. An overweight dog loses two years off of its life, for every ten pounds they're overweight.