Can Dogs Eat Sardines in Olive Oil?
If you're thinking about sharing sardines with your dog, you're on the right track—sardines can be a nutritious addition to a canine diet. But when it comes to sardines in olive oil, it's best to pause and consider some important details before serving them up.
Why Sardines Are Good for Dogs
Sardines are small, oily fish packed with nutrients that benefit dogs in many ways. They're loaded with high-quality protein, omega-3 fatty acids (especially EPA and DHA), vitamins B12 and D, calcium, phosphorus, selenium, taurine, zinc, copper, and coenzyme Q10. Because they're low on the food chain, sardines have less mercury than bigger fish like tuna—making them a safer seafood choice for your pup.
The benefits of feeding sardines to dogs include:
- Heart health support
- Improved cognition and brain development
- Healthier skin and a shinier coat
- Stronger immune system
- Reduced inflammation
- Better joint and bone health
The omega-3s help keep your dog's heart ticking smoothly and their joints limber. The protein aids muscle development, while minerals like calcium and phosphorus strengthen bones. Vitamins B12 and D support metabolic processes and immunity.
The Problem With Sardines in Olive Oil
While olive oil isn't toxic to dogs in small amounts, canned sardines packed in oil (including olive oil) are not recommended for regular canine consumption. Here's why:
- Added fat: Extra oil increases the fat content of the treat, which can lead to digestive upset or even pancreatitis—especially for dogs prone to these issues.
- Weight gain: The extra calories from the oil can contribute to obesity if fed frequently.
- Sensitive stomachs: Dogs with pancreatitis, diabetes, or fat sensitivity should avoid high-fat foods like sardines in oil altogether.
- Sodium content: Some canned varieties may also contain added salt or seasonings that aren't safe for dogs.
If you only have sardines in olive oil on hand and want to feed them occasionally as a treat, drain off as much oil as possible before offering a small amount. However, it's much better to choose plain sardines packed in water with no added salt or flavorings.
The Best Way to Serve Sardines to Dogs
If you want your dog to get all the benefits without unnecessary risks:
- Select plain, cooked fresh or frozen sardines—or canned versions packed in water without added salt or seasonings.
- Avoid brined or flavored varieties (such as those with tomato sauce or spices).
- If using canned sardines, always drain off any liquid (especially if it's oil or brine).
- Soft-boned sardines are generally safe; remove large or sharp bones if you're unsure about their safety.
Sardines should be served as an occasional treat or meal topper—not as a replacement for balanced dog food. For puppies or dogs new to sardines, start with very small amounts and watch for any adverse reactions (like vomiting or diarrhea).
How Much Sardine Is Safe?
Sardines shouldn't make up more than about 10% of your dog's daily calorie intake. Serving sizes depend on your dog's size:
- Small dogs (under 20 lbs): 1–2 sardines once or twice a week is reasonable.
- Medium dogs: Up to three per serving.
- Large dogs (over 50 lbs): Four to five per serving is fine occasionally.
If your dog has a sensitive stomach or is prone to weight gain, start small and increase only if tolerated well. Always monitor your dog after introducing new foods.
Who Should Avoid Sardines?
- Pups with pancreatitis: The high fat content can trigger flare-ups.
- Dogs with obesity or diabetes: Extra fats may worsen these conditions.
- Sensitive stomachs: Some dogs simply don't tolerate oily fish well; watch for GI upset.
If you notice itching, swelling, vomiting, diarrhea, or lethargy after feeding sardines—stop immediately and consult your veterinarian. Allergies are rare but possible.
Sardine Safety Tips & Preparation
- Avoid raw sardines unless they've been frozen at –4°F (–20°C) for at least seven days (this kills parasites).
- Cooked unseasoned sardines are safest; never feed those containing onion or garlic powder.
- If transitioning your dog’s diet to include sardines, do it gradually over at least a week—this reduces the risk of stomach upset.
Sardines vs Other Fish: Why They’re Better Than Tuna
Sardines contain more omega-3s than tuna but much less mercury—making them safer for regular feeding. Tuna carries higher risks due to mercury accumulation over time; stick with small fish like sardines when supplementing your dog’s meals with seafood treats.
The Bottom Line: Plain Is Best!
Sardines can be an excellent treat for most dogs when served plain—in moderation—and tailored to their size and health needs. Avoid those packed in oils (including olive), brine, tomato sauce, or anything seasoned. If you’re ever unsure about adding new foods like sardines to your pet’s routine—or if they have special dietary needs—check with your veterinarian first. Your pup will thank you for keeping their meals both delicious and safe!
