✓ Reviewed against PDSA, Blue Cross & Animal PoisonLine guidance · Last reviewed: 2026-06
Can dogs eat sardines in spring water?
The full picture
Sardines in spring water are the cleanest sardine option you can buy for your dog. Spring water is plain, additive-free, and adds nothing to the tin except packaging fluid. When you drain the tin, you're left with whole sardines containing their natural omega-3 oils, soft edible bones (a complete calcium source), and high-quality protein.
The nutritional profile is hard to beat for a treat: a typical 100g tin contains around 24g protein, 11g fat (mostly omega-3 EPA and DHA), and 400mg of bioavailable calcium. Most UK supermarket brands list only 'sardines, spring water, salt' on the ingredients.
How much: roughly one sardine per 5kg of body weight, two to three times a week. A 25kg Labrador can have a half tin, twice a week. Don't make it daily — the omega-3 content is high enough that excessive amounts can have mild blood-thinning effects.
Risks to watch for
- Excessive amounts can contribute to pancreatitis
- Calorie-dense — overdoing it leads to weight gain
Potential benefits
- Excellent source of omega-3 EPA and DHA
- High-quality bioavailable protein
- Soft bones provide calcium
- Vitamin D, B vitamins, selenium
- Low mercury (sardines are small, short-lived fish)
Safe portion size
One sardine per 5kg body weight, two to three times a week.
Safer alternatives
- Sardines in water (similar)
- Mackerel in spring water
- Salmon oil supplements
And while you're thinking about what's good for your dog, keeping on top of flea and parasite prevention is just as important as diet.
Common questions
Can puppies eat sardines in spring water?
Should I rinse the sardines before serving?
Can I feed sardines daily?
How we keep this site free. Some links on this page take you to Amazon. We earn a small commission if you buy something — at no extra cost to you. Editorial first, products second. Full disclosure.