If a diet does not provide adequate carbohydrate to meet immediate energy needs, the body compensates by altering its metabolism of other nutrients. Insufficient dietary carbohydrate can lead to elevated levels of ketone bodies. Ketone bodies are the by-products of partial breakdown of:
a. fat
b. protein
c. alcohol
d. carbohydrates
e. vitamins

Fat

Explanation:

Ketone bodies are liquid-soluble substances comprising the ketone group formed by the liver from fatty acids usually caused by consumption of carbohydrate-restrictive diets, they are chemicals the body develops whenever there is insulin inadequate in the blood and it tries to break down fat rather than sugar glucose for energy.

Ketone bodies are the by-products of partial breakdown of FAT.

Your body can turn protein into glucose in the absence of carbohydrates in the diet, so it's not just carbohydrates that may boost the blood sugar and insulin levels.

no because dogs are cats the product you bought is meant for cats xd