Can dogs eat banana?
Updated 5 August 2026
Yes. Plain banana is safe for dogs in sensible amounts. It is high in natural sugar, so think of it as an occasional treat rather than a daily topper, and skip the peel.
The detail
Banana suits most dogs as a training treat, a stuffed-toy filler or a mashed addition to a lick mat. It brings potassium and fibre, though a complete dog food already covers both.
The sugar is the limit. A medium banana holds around 14g of sugar, so a whole one is a lot for a small dog in one sitting.
Regular sugary extras add up to weight gain, and half of UK dogs are already overweight by most veterinary estimates. Overweight and diabetic dogs should get vegetables instead.
What is in a medium banana
| Sugar | Around 14gThe reason portions stay small |
| Fibre | Around 3g |
| Potassium | Around 400mg |
| Anything toxic to dogs | NothingThe peel is a blockage risk, not a poison |
How much is sensible
| Dog size | Sensible amount |
|---|---|
| Small (under 10kg)Chihuahua, Jack Russell | Two or three thin slices, a couple of times a week |
| Medium (10 to 25kg)Cocker spaniel, border collie | A quarter of a banana |
| Large (over 25kg)Labrador, German shepherd | Up to half a banana |
| Overweight or diabetic dogs | Skip it. Cucumber or carrot does the same job without the sugar |
Can dogs eat banana skin?
Not on purpose. The skin is not poisonous, but it digests badly and a swallowed chunk can block the gut of a smaller dog.
If your dog swallows a whole peel, watch for vomiting, a hunched posture or a refusal to eat, and ring your vet if any appears. Bin peels somewhere the compost raider cannot reach.
Banana chips
Check the label first. Shop-bought banana chips are usually fried in oil and coated in sugar, which turns a healthy fruit into a poor treat.
Plain dehydrated slices with nothing added are fine occasionally. The ingredients list should say banana and nothing else.
Banana bread
Usually best kept away. Most recipes carry sugar and butter, and many include raisins or chocolate chips, both of which are toxic to dogs.
If a plain, fruit-free slice goes missing, no drama. If the loaf had raisins in it, treat it as a grape incident and ring your vet.
Frozen banana
A good trick for hot days. Mash banana into a lick mat or a rubber toy and freeze it for a slow, cooling treat.
Keep the portion sizes from the table above. Freezing changes the texture, not the sugar.
Common questions
Can puppies eat banana?
Yes, in smaller amounts than the table above. A slice or two is plenty, and it makes a good soft reward during training.
Can dogs eat banana every day?
Better to rotate it with lower-sugar options like carrot or cucumber. Daily banana is a daily sugar dose your dog does not need.
My dog ate a whole banana, skin and all. What now?
The fruit is harmless, so the watch item is the skin. Look out for vomiting, straining or refusing food over the next day or two, and ring your vet if any of those show up, sooner for small dogs.
Do bananas help dogs with diarrhoea?
They sometimes get recommended for it, but the evidence is thin and the sugar cuts both ways. A bland diet and a vet call if it lasts beyond a day or two is the safer route.
Are banana sweets or foam bananas safe?
No. Sweets are sugar at best, and anything sugar-free may contain xylitol, which is extremely toxic to dogs. Keep all sweets out of reach.