Can dogs eat sardines?
Yes, sardines are one of the healthiest fish for dogs. Because they're small and short-lived, they contain very low levels of mercury compared to larger fish like tuna. They're packed with omega-3 fatty acids, calcium, and vitamin D.
Seafood · 208 kcal per 100 g
Benefits and risks
Benefits
- Excellent omega-3 fatty acid source (EPA and DHA) with very low mercury
- Bones are soft and edible — great natural calcium source
- Rich in vitamin D, B12, and selenium
- Small size makes portioning easy
- Contains CoQ10 for heart and cellular health
Risks
- Canned sardines in oil add unnecessary fat — choose water-packed
- Some canned varieties contain added salt — check labels
- Strong smell can be off-putting to owners (dogs love it)
- Too many can cause loose stools from the oil content
- Sardines in tomato sauce or mustard contain unsuitable ingredients
Recommended serving size
Adjust portions based on your dog's weight, age, and activity level. Treats and snacks should make up no more than 10% of daily calories.
| Dog size | Weight range | Serving |
|---|---|---|
| Small dog | Under 20 lbs (9 kg) | 1 small sardine or half a large one |
| Medium dog | 20–50 lbs (9–23 kg) | 1-2 sardines |
| Large dog | Over 50 lbs (23 kg) | 2-3 sardines |
How to prepare and serve
Preparation
Choose canned sardines packed in water with no added salt — these are the safest and most convenient option. Drain the liquid before serving. The soft bones in canned sardines are safe and provide calcium. Fresh sardines should be cooked (baked or steamed) and deboned if bones are large. Mash onto food or feed whole as a treat. Avoid sardines in oil, tomato sauce, mustard, or with added seasonings.
Frequency
2-3 times per week for omega-3 benefits.
Key nutrients
- Omega-3 (EPA/DHA)
- Calcium
- Vitamin D
- Vitamin B12
- Selenium
- CoQ10
Frequently Asked Questions
- Sardines are superior to tuna for dogs primarily because of mercury levels. Sardines are small, short-lived fish that don't accumulate significant amounts of mercury through the food chain. Tuna — especially albacore and yellowfin — are large, long-lived predators that accumulate mercury over years of eating smaller fish. Sardines provide comparable omega-3 fatty acid levels with a fraction of the mercury risk. They also contain edible bones that provide calcium, which tuna does not. The only advantage tuna has is availability and milder taste, but nutritionally and safety-wise, sardines are the better choice.
- Yes — the bones in canned sardines are completely safe for dogs. The canning process involves pressure-cooking at high temperatures, which softens the bones until they're easily chewed and fully digestible. These soft bones are actually an excellent natural source of calcium and phosphorus. Fresh sardine bones are also small and relatively soft compared to the bones of larger fish. However, if you're cooking fresh sardines at home and the bones seem firm, it's safer to remove them for small dogs. Canned sardines are the easiest way to provide safe, bone-in fish.
- Read the ingredient label carefully. The ideal canned sardines for dogs are packed in water with no added salt — the ingredients should list only 'sardines' and 'water.' Avoid sardines packed in olive oil, sunflower oil, soybean oil, tomato sauce, mustard, or hot sauce. 'Low sodium' versions are acceptable but still check the actual sodium content. Wild-caught sardines are generally preferred over farmed. Brands marketed for human consumption are fine — there's no need to buy special pet-branded sardines, which are often the same product at a higher price.
Related seafood
Crab
CautionCooked crab meat is safe in small amounts, but the shell is dangerous and imitation crab is not recommended.
Lobster
CautionPlain cooked lobster meat is safe in small amounts, but the shell is dangerous and most preparations include unsafe ingredients.
Salmon
SafeExcellent source of omega-3 fatty acids for skin, coat, and joint health — must be fully cooked. Never feed raw Pacific salmon.
Shrimp
SafeCooked, peeled, deveined shrimp is a low-calorie protein treat. Always remove shell, head, and tail.
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