[aimee]

Hi jill b,
Spycar makes some bold statements without any references. Here is what the science says

Dogs eating 62% carb calories had body fat levels of 21+/-2.1% (25% protein calories, 13% calories from fat and 62% calories from carbohydrate) The dogs eating 0-1% carb had 27.1 +/-1.8% body fat ( 24% protein 76% fat calories and 0 carb calories), 27.5 +/-2.7% body fat f ( 48%protein calories, 52% fat calories and 0 carb calories) and 29.5 +/-1.6% body fat (44% protein calories, 55% fat calories and 0 % carb calories)

replace the word dot with a . after the word amazonnaws

https://s3.amazonawsdotcom/academia.edu.documents/44951774/Effects_of_dietary_carbohydrate_fat_and_20160421-16818-13tz74c.pdf?AWSAccessKeyId=AKIAIWOWYYGZ2Y53UL3A&Expires=1544112009&Signature=80mvsXfKSU13Jg8FGSk7O%2B6%2B2sk%3D&response-content-disposition=inline%3B%20filename%3DEffects_of_Dietary_Carbohydrate_Fat_and.pdf

All studies have limitations but from this you can see that dogs eating a high carb diet had less body fat than those eating very low to no carb diet calling into question Spy Cars fears that feeding your dog carbohydrate would result in obesity. All dogs are individuals and what macronutrient profile they do best on may be inherent to that individual. For my Labs feeding the Pro Plan weight management formula worked best.
Hope you find what works for your dog!