Why is my dog always hungry?

The short answer

1. Begging is learned. If begging gets food or attention, your dog will beg more.
2. Some dogs are born hungrier. Many Labradors and flat-coated retrievers carry a gene that makes them hungry.
3. The diet feels too small. Less food in the bowl means an emptier stomach.
4. Meals are too far apart. One big meal a day leaves a long gap.
5. A health problem. Diabetes, Cushing's disease and some medicines make dogs very hungry.

1. Begging is learned

Dogs repeat what works. A bite of toast at breakfast, a crust at dinner, a treat when they stare at you. Each one teaches your dog that begging pays. Soon your dog begs all day, even when full.

This is not real hunger. It is a habit, and you can unlearn it together. Give praise, play or a walk instead of food. Feed meals in the dog's own bowl, not from the table. Ask everyone in the house to follow the same rule. One person who gives in keeps the habit alive.

2. Some dogs are born hungrier

In 2016, researchers at the University of Cambridge found a change in a gene called POMC. It is common in Labradors and flat-coated retrievers. About one in four Labradors carries it. Dogs with the change were heavier and more interested in food. Owners said they begged more and looked for scraps more.

A follow-up study in 2024 found two things. Dogs with the change got hungry again sooner between meals. And they used less energy at rest. In flat-coated retrievers with two copies of the gene, it was about a quarter less.

So if your Lab acts hungry all the time, your dog may truly feel it. It is not your fault. But these dogs still need less food, not more. Their body uses less, so the same portion puts on weight faster.

3. The diet feels too small

When a dog eats less to lose weight, the bowl looks emptier, and the dog feels it. This is the main reason owners give up on a diet. Three things help a dog feel full on fewer calories:

• A weight-loss food high in protein and fibre. In a 2010 study of obese pet dogs, dogs on a high-protein, high-fibre food lost more weight and more body fat than dogs on a high-protein food with less fibre.
• Low-calorie extras. Many vets suggest a few plain green beans or carrot pieces to add volume. Ask your vet first if your dog has a health problem.
• The right amount, weighed. Feeding too little makes the diet hard to stick to. Feeding too much stops the weight loss. The dog food calculator shows the right amount for a healthy weight.

4. Meals are too far apart

Split the same daily amount into more meals. Three or four small meals keep the stomach from feeling empty for long. Do not add food. Divide what you already give.

Make each meal last longer, too. Use a puzzle feeder or a slow-feed bowl. Or scatter dry food on the lawn so your dog has to sniff it out. Sniffing and searching keep a dog busy and happy.

5. A health problem

Some illnesses make dogs very hungry. See your vet soon if your dog is always hungry and also:

• is losing weight while eating well,
• drinks or pees much more than before,
• has a pot belly, thin fur or a lot of panting,
• got hungrier suddenly, or is older and this is new,
• started a new medicine. Steroids such as prednisone often make dogs hungry.

Diabetes and Cushing's disease are two common causes. Both need a vet's care. A diet will not fix them.

Treats count as food

Treats, chews and table scraps add up fast. Vets often say treats should be no more than 10% of a dog's daily food. Use part of the daily kibble as treats instead. Or break treats into tiny pieces. Your dog cares about how often, not how big. The dog treat calculator shows how many treats fit in a day.

Weigh the food once

Scoops are not as accurate as they look. In a 2019 study in Veterinary Record, owners who measured dry food with a cup or scoop were off by as much as 152%. Weigh one level scoop of your dog's food on a kitchen scale once. Then you know what your scoop really holds.