Can dogs eat pineapple?

Why

There is nothing toxic in fresh pineapple flesh. It is mostly water, with natural sugars and fibre, plus some vitamin C and manganese. It is worth being honest about that vitamin C, though: dogs make their own, so pineapple is a nice treat rather than a health food. Feed it because your dog enjoys it, not because it is doing anything their dinner isn't already doing.

The genuine risks with pineapple are mechanical, not chemical. The skin is tough and studded with hard little eyes, and the core running down the middle is dense and woody. Neither breaks down well in a dog's gut. A dog who gulps rather than chews can choke on a lump of core, and a large enough piece can, less commonly, get stuck somewhere it shouldn't. Small dogs and enthusiastic swallowers are the ones to watch.

The rest is simply a question of how much. Pineapple is one of the sweeter, more acidic fruits, and a sudden hit of sugar, acid and fibre in a dog who isn't used to it is a reliable recipe for gurgling, wind and sloppy stools. Bromelain, the enzyme that makes your own tongue tingle after a few slices, can leave some dogs lip-smacking or drooling for a few minutes. That passes on its own.

Some dogs are better off skipping it: diabetic dogs, dogs being kept lean, dogs with a history of pancreatitis, and dogs with a famously delicate stomach. Have a quick word with your vet before you start if any of that sounds like yours. Form matters too — stick to fresh. Tinned pineapple in syrup, pineapple juice and dried pineapple all concentrate the sugar, and any sweetened fruit product is worth checking, as some sweeteners are genuinely dangerous to dogs.

How much is sensible?

Treats of any kind should stay under roughly 10% of your dog's daily calories, and pineapple sits comfortably inside that if you keep it to a taste rather than a portion. In practical terms: one or two small bite-size chunks for a Labrador-sized dog, a single small piece for a terrier, something closer to a fingernail-sized piece for a very small dog — and not every day. The first time, give one piece only and see how they get on over the next day before offering more. To prepare it, take a ripe fresh pineapple, cut the skin off generously so none of the hard eyes remain, cut out the fibrous core down the middle and bin it, then chop the flesh into cubes sized for your dog's mouth. Serve it plain: no syrup, no sugar, no cream, no juice.

Signs to watch for

• Lip-smacking, drooling or pawing at the mouth for a few minutes after eating — the acidity and the enzyme can tingle
• A gurgling, rumbling tummy and more wind than usual a few hours later
• Loose or sloppy stools, sometimes lasting a day
• Bringing food back up, or being sick once or twice
• Going quiet, refusing dinner, or looking uncomfortable and hunched
• Repeated retching, straining without producing anything, or unusual lethargy — more of a worry if they got at the skin, crown or core

If your dog has had too much

Most of the time there is nothing to do at all — a bit of wind or one soft stool after a new treat usually settles by itself. Skip the next treat, make sure fresh water is available, keep to their normal food and give their gut a day to sort itself out. Ring your vet if your dog is being sick repeatedly, if diarrhoea carries on beyond a day or has blood in it, if they turn their nose up at food, or if they seem dull or sore in the tummy. If you know or suspect they have swallowed skin, the leafy crown or a chunk of core — particularly a small dog, or a dog who bolts things whole — ring your vet the same day even if they seem perfectly fine, tell them roughly how much and when, and don't try to make your dog sick unless your vet specifically tells you to.

Serving tips

• Peel deeply and cut the core out before your dog is anywhere near it — the flesh is the only part that should ever reach them.
• Fresh and plain only. Skip tinned pineapple in syrup or juice, pineapple juice and dried pineapple, which all pack in far more sugar than a treat needs.
• For a hot day, freeze bite-size chunks spread out on a tray, or mash a little pineapple onto a lick mat to make it last. Go easy on rock-hard frozen lumps with dogs who crunch rather than lick.
• Bin the skin, crown and core somewhere the dog can't reach. A pineapple top left on the worktop is exactly the sort of thing a counter-surfer takes an interest in.

Common questions