Digestive differences between the two oils
For an 8 kg dog, a teaspoon of either oil is a small dose, but they act differently in the gut. Olive oil's monounsaturated fats are easier to break down, often passing through with minimal fuss. Coconut oil's saturated fats require more bile to emulsify, which can delay stomach emptying slightly — sometimes causing mild nausea in sensitive dogs.
Neither will harm at this dose, but olive oil is less likely to leave your dog feeling overly full or licking his lips afterward. Watch his next bowel movement — coconut oil tends to make stools slightly firmer, olive oil slightly looser, but rarely problematic at this amount.
Skin benefits compared at this dosage
A teaspoon weekly of either oil won't dramatically impact skin health but can add slight moisture. Olive oil provides more oleic acid, which supports skin barrier function directly. Coconut oil offers lauric acid with antimicrobial properties, but these are negligible at such small, infrequent doses.
The real skin benefits come from consistent omega-3s, which neither oil provides significantly. For dry skin, discuss fish oil supplements with your vet rather than relying on kitchen oils. That said, a teaspoon of olive oil on food occasionally adds palatability without the risks of higher saturated fat.
Pancreatitis risks at this dog's size
An 8 kg dog would need to eat tablespoons — not teaspoons — of either oil regularly to risk pancreatitis. However, coconut oil's higher saturated fat content makes it the riskier choice if portions creep up over time. Olive oil's safer profile means you're less likely to cause issues if you accidentally pour a bit extra.
Neither oil should be given daily to small dogs — space out any oil additions by at least 3-4 days to let the pancreas rest. And always skip the oil entirely if your dog has a history of pancreatitis, regardless of type.
Practical use tips for dry skin relief
Instead of adding oil to food, try rubbing a pea-sized amount of olive oil directly on dry patches where your dog can't lick it off immediately, like along the spine. This avoids digestive effects while letting the oil absorb locally. For paw pads, use coconut oil sparingly — its firm texture makes it easier to apply there without dripping.
Remember that external dryness often reflects low humidity or over-bathing more than dietary fat deficiency. Run a humidifier during dry months and limit baths to every 6-8 weeks with moisturizing shampoo before relying on oils internally.
The full verdict, portion guidance and serving notes are collected on the Olive oil food facts page.