You should be able to feel individual ribs, but not see the definition of each rib. This is a good rule of thumb. If you don't feel his ribs, it means you're overfeeding him. If you see visible ribs, then your dog is truly hungry and needs more food.
How do I know how much to feed my dog?
Puppies should be fed 5-6% of their growing body weight and Adult dogs should be fed 2-3% of their ideal body weight. This is only a guide. Some dogs may need, more or less to maintain proper weight. We recommend feeding any dogs over the age of 6 months twice a day.
What happens if a dog doesn't eat enough?
Although a loss of appetite in dogs doesn't necessarily indicate serious disease, prompt veterinary attention is important because it could be a sign of significant illness, including cancer, various systemic infections, pain, liver problems, and kidney failure.
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