Most dogs will eat whatever is put in front of them — which makes it easy to assume they are thriving. But the quality of what goes into that bowl matters enormously. Nutritional deficiencies rarely announce themselves loudly. Instead, they show up as subtle, easy-to-miss signals that pet parents often chalk up to age or personality.

Here are five signs your dog's current diet may be falling short — and what you can do about it.

1. Dull, Dry, or Flaky Coat

A healthy dog should have a soft, glossy coat. Dryness, excessive shedding, or dandruff often point to a deficiency in omega-3 fatty acids or poor-quality protein. The skin is the body's largest organ — it reflects what's happening inside.

2. Low Energy or Sudden Lethargy

While all dogs have lazy days, a persistent lack of enthusiasm for walks or play can signal that caloric intake or essential nutrients like B vitamins and iron are insufficient for your dog's breed and age.

3. Frequent Loose Stools or Gas

Digestive instability is one of the clearest signs of a poor diet. Low-quality fillers, artificial binders, and inadequate dietary fibre disrupt the gut microbiome. Healthy stools should be firm, dark brown, and consistent day to day.

4. Excessive Hunger After Meals

A dog that inhales its food and immediately begs for more is often eating calorie-dense but nutrient-poor kibble. High-quality food with balanced macronutrients promotes satiety — your dog feels full and satisfied.

5. Poor Muscle Definition or Weight Gain

Muscle is built and maintained by high-quality, bioavailable protein. Diets heavy in grain fillers or plant-based protein substitutes may meet calorie targets while leaving lean muscle mass underfed — especially critical for active or senior dogs.

What Should You Do?

Start by reading your current food's ingredient list. Ingredients are listed by weight — if the first three ingredients include corn, wheat, or soy rather than a named meat protein (chicken, salmon, lamb), your dog's diet likely has room to improve.

Look for foods with a single, named protein source as the first ingredient, added omega-3s from fish oil or flaxseed, and no artificial colours or preservatives. If you notice multiple signs above, a gradual transition to a higher-quality formula over 7–10 days can make a visible difference within weeks.

VitalPaw Tip: When switching foods, mix 25% new food with 75% old food for the first 3 days. Increase to 50/50 for days 4–6, then 75% new for days 7–9, and full transition by day 10. This prevents digestive upset and helps your dog adjust comfortably.