Checked against the SaluPaws toxic-food database
Bananas are non-toxic and most dogs love them. The catch is sugar and calories: at roughly 90 kcal per medium banana, a whole one exceeds a small dog's entire daily treat budget. Think slices, not bananas — and skip the peel.
A 10 kg neutered adult needs about 630 kcal/day — a 10% treat budget of ~63 kcal. A medium banana is ~90 kcal, so even two-thirds of one maxes the day out. Sensible ceilings: 2–3 slices for a small dog, 4–5 for a medium dog, half a banana for a large dog. Get your dog's exact budget here.
Log "banana, 3 slices" in SaluPaws and it counts against your dog's personalised daily calorie target — so fruit treats stay a healthy extra instead of silent weight gain. And if you ever log something risky, the toxic-food alert has your back.
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Yes, tiny amounts — a slice or two. Puppy calorie budgets are small and their diets need to stay balanced for growth, so keep fruit to occasional training-treat territory.
One banana won't harm a healthy dog beyond possibly a soft stool — it's just a lot of the day's calories. If a whole peel went down too, especially in a small dog, watch for vomiting or constipation and ring your vet if either appears.
Its fibre and gentleness mean small amounts are sometimes suggested alongside a bland diet — but persistent stomach trouble is a vet conversation, not a fruit fix.
Not safely by default — recipes may include raisins (toxic), chocolate (toxic) or xylitol (highly toxic), plus plenty of sugar and butter. Plain banana slices are the safe version.
Calorie figures are typical label values for fresh banana. This page is general guidance, not a substitute for professional veterinary advice.