What Dogs and Cats Can't Eat: A Sharing Guide to 5 Everyday Food Traps

At dinner the dog sits by the table watching you; the cat jumps onto a chair to sniff your plate. Most pet parents have the same thought: one bite won't hurt, will it? It's a natural instinct — sharing food is how we bond with family. But dogs and cats are not built like us. Some human foods are simply too oily or salty and cause diarrhoea; others can cause poisoning, choking, even kidney damage.

For most families the real risk isn't an exotic ingredient — it's the most convenient bite on the table: rice, fried chicken, cake, braised snacks, fruit, even seemingly healthy yoghurt or salad. The problem is rarely a single food name; it's what's behind it: seasoning, fat, sugar, lactose, bone splinters, spices, or compounds dogs and cats cannot safely metabolise.

This guide walks through the five most commonly shared human foods — what dogs and cats can't eat, what's fine only in tiny amounts, and what to avoid outright — so your good intentions stay, and the risk drops.

Before you share a bite: 4 steps that beat on-the-spot judgement

Step 1 — Rule out high-risk foods first

If it contains alcohol, chocolate, grapes, raisins, xylitol, spring onion, garlic or onion — or obvious sharp bones, fish bones or skewers — don't share. This step matters most, because many of these risks are not "fine in small amounts".

Step 2 — Minimise the irritants

If you do share, choose plain, whole, low-fat, low-salt foods. Rinsing surface seasoning off helps, but anything deep-fried, heavily salted or cured is still best avoided.

Step 3 — Cut small, slow down

Many emergencies aren't poisoning but choking, bone splinters or swallowed objects. Tear food into small pieces, check for hard bits, and let them eat slowly.

Step 4 — Clear the table, the bin and the takeaway boxes

What really happens: you share one bite, and later they go back for a second round on their own. Table scraps, takeaway boxes, bone bags and bins are the usual scenes. If you want to help strays outside, a complete, nutritionally designed wet food or kibble is far safer than table food.

Can they have staple carbs? A little plain is fine — just don't replace meals

Rice, toast and steamed buns aren't toxic; the issues are portion and processing

A small plain bite of rice, congee, toast or bun rarely causes immediate trouble, but these aren't the extras dogs and cats need. Used habitually as begging rewards they crowd out proper food and unbalance the diet — most noticeably in small, sensitive-stomach or picky pets.

The real danger in baked goods hides in the fillings

Raisins, chocolate, xylitol, cream fillings and savoury spreads can turn one bite into a high-risk exposure. Xylitol is especially dangerous for dogs and can trigger rapid hypoglycaemia; grapes and raisins are linked to acute kidney injury in dogs.

In practice: keep it to the plainest small piece

No seasoning, no filling, no spread, no sweetener — and only a little. If they've already had a few bites of rice or toast today, skip the treats later so the day's calories and nutrition stay on track.

Why desserts and snacks cause the most trouble: sugar, fat, salt and toxins together

Chocolate is not a treat — it's a clear poisoning risk

Chocolate contains methylxanthines that dogs metabolise far more slowly than humans, causing vomiting, agitation and rapid heartbeat — in severe cases, death. Baking chocolate, dark chocolate and cocoa powder are riskier than milk chocolate.

Nuts, seeds and chips: it's not just "unhealthy"

These are high-fat, high-salt, heavily seasoned and small — dogs choke eating fast; cats react with stomach upset. Popcorn and seed shells can lodge in teeth, scratch the mouth or be swallowed whole.

In practice: simply don't share desserts or snacks

If it's connection you want, a small piece of plain boiled meat is lower risk and closer to what dogs and cats actually need. Table snacks have too many variables to gamble with.

Why fried food, salt-and-pepper chicken and braised snacks are especially unwise

Heavy fat and salt hit the gut first

Fries, fried chicken, cutlets, popcorn chicken, tempura and blood rice cakes commonly cause thirst, lip-licking, soft stools, vomiting or abdominal pain — and, in larger amounts, raise pancreatitis risk. The danger is highest in pets with sensitive stomachs, a history of pancreatitis, or poor tolerance of high-fat food.

Sauces and seasonings are often worse than the food itself

Home dishes and braised platters look like meat and vegetables, but the trouble is in the sauce: spring onion, garlic, onion, pepper and excess salt. Allium plants in particular can oxidatively damage red blood cells and cause haemolytic anaemia.

In practice: pick out only the plain whole ingredient

Choose pieces that haven't soaked up heavy seasoning — plain boiled chicken or blanched vegetables — confirm there are no bones, fish bones, skewers or hard chunks, and cut small. Sauce-soaked meat, braised platters and fried trimmings are not for sharing.

Are "healthy-looking" fruit and dairy really suitable?

Dairy's problem is lactose, not calcium

Many adult cats are lactose intolerant to some degree, and dogs don't always digest regular milk well; diarrhoea, bloating or soft stools are the usual results. Some individuals tolerate a little yoghurt or cheese, but neither belongs in daily sharing. For related nutrients, choose pet-specific products with clear ingredients and doses.

Grapes and raisins are a definite high risk for dogs

Recent research links grape toxicity to tartaric acid; some dogs develop acute kidney injury after eating them. Individual variation is large — some react to tiny amounts — so the practical advice is unanimous: don't try. Past tolerance does not predict future safety.

Fruit isn't all off-limits, but prepare it properly

Small amounts of apple, guava or watermelon can be offered once peeled, seeded and cored, with portions controlled. Avocado isn't recommended (high fat, possible GI upset). For pets with weaker kidney function, discuss high-potassium fruit with your vet first.

When to see a vet immediately

Don't wait and watch once poisoning or acute GI signs appear

Persistent vomiting or diarrhoea, obvious lethargy, panting, unsteady gait, abdominal pain — or any suspicion they swallowed bone splinters, skewers or packaging — means go now. Bring the packaging, ingredient list or leftover food to help your vet.

よくある質問

Can dogs eat white rice? A little plain rice is usually fine, but it shouldn't regularly replace meals. Rice mixed with gravy, butter, furikake or other seasoning raises the risk considerably.

Can cats drink milk? Most adult cats shouldn't have regular milk as an everyday shared food because of lactose intolerance — and if it causes soft stools or diarrhoea, avoid it entirely.