✓ Reviewed against PDSA, Blue Cross & Animal PoisonLine guidance · Last reviewed: 2026-07

Can dogs eat sardines?

Q: Can dogs eat sardines?

Yes — sardines are excellent for dogs in moderation. The type matters: sardines in spring water are the best option. Sardines in brine, oil, or any flavouring are problematic.

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The full picture

Sardines are one of the best human foods you can feed a dog, but the type you buy matters enormously.

Sardines in spring water is the gold standard option. Spring water is plain and contains no added salt, oils, or flavourings. A small tin is a near-perfect occasional dog treat: high-quality protein, omega-3 fatty acids (EPA and DHA), B vitamins, vitamin D, and calcium from the small bones.

Why sardines? Of all oily fish, sardines have the best balance for dogs: they're a small species so accumulate less mercury than tuna; the small bones are soft and edible; and the omega-3 content supports skin, coat, joints, and brain function.

Quick summary of the variants: • Sardines in spring water — best option. Drain and serve. • Sardines in water — also fine, drain first. • Sardines in brine — too much salt. Rinse thoroughly or skip. • Sardines in olive oil — extra fat. OK occasionally, drained, for healthy dogs. • Sardines in tomato sauce — contains onion/garlic powder. Avoid.

How much: a small breed dog (under 10kg): one or two sardines, twice a week. A 25kg Labrador: half a tin, twice a week.

Risks to watch for

Salt in brine-packed versions
Fat overload in oil-packed versions
Mild fishy breath afterwards

Potential benefits

Excellent omega-3
Calcium from bones
Protein
Supports skin and joints

Safe portion size

One or two sardines in spring water, two or three times a week.

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Common questions

Can dogs eat sardines in spring water?

Yes — this is the best option. Drain and serve. Roughly one sardine per 5kg body weight, two to three times a week.

Can dogs eat sardines in water?

Yes, broadly the same as spring water. Drain first. Check the label for added salt.

Can dogs eat sardines in brine?

Not ideal — too much salt. If it's all you have, rinse the sardines under the tap thoroughly before serving.

Can dogs eat sardines in olive oil?

OK occasionally for healthy dogs — drain well. Skip for dogs prone to pancreatitis.

How often can dogs have sardines?

Two to three times a week is plenty. Daily is too much omega-3 long-term.

Can puppies eat sardines?

Yes, in smaller portions. Excellent omega-3 source for brain development.

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If your dog suffers from skin irritation or allergies, Apoquel for dogs is widely prescribed — available online from Best Vet Care.

Important: This page is general information, not veterinary advice. Every dog is different, and individual factors (age, breed, health conditions, medications) can change what's safe. If in doubt, always contact your vet — or the Animal PoisonLine on 01202 509000 in the UK.