Ingestion and product exposure
Kitchen foods: feline exposure risks and evidence limits
Compare product forms and the limits of the evidence instead of treating every kitchen ingredient as the same exposure.
Editorial integration: TengRip · Structure and content integrated：2026-10-25
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Compare context and evidence
| Item | What the source covers |
|---|---|
| chocolate | Theobromine and caffeine in chocolate can cause cardiac and neurological signs. Cocoa powder and baking chocolate are usually concentrated; dog dose thresholds are not feline safety limits. |
| caffeine | Caffeine is a methylxanthine that can cause rapid heart rate, tremors or seizures. Assess exposure by product concentration, quantity and body weight. |
| alcohol | Alcohol can cause hypoglycaemia and central nervous or respiratory depression. Risk depends on alcohol type, concentration, quantity and route. Do not deliberately give alcohol to cats. |
| active yeast | Unbaked active yeast or raw dough keeps fermenting in the warm stomach, producing alcohol (which can cause alcohol poisoning) and gas (which causes bloating). The ASPCA lists raw yeast dough as dangerous to pets, and large dogs also face a potentially fatal risk of gastric dilatation-volvulus (GDV). Baked yeast and brewer's yeast powder are not covered by this warning. |
| grape | Grapes and raisins can cause acute kidney failure in dogs, and even small amounts can be fatal. Reports in cats are rare and evidence is limited, but they still should not be fed to cats. |
| Avocado: do not transfer other species’ severe effects to cats | Species differ considerably. Direct feline evidence is limited; identify the part eaten, amount and mixed ingredients. |
| Nutmeg exposure: food seasoning versus spice powder | Small seasoning amounts and large spice-powder exposures are different situations. Assessment needs the product, amount and cat’s condition. |
| xylitol | Xylitol triggers a massive insulin release in dogs, causing acute hypoglycemia and liver failure — even small amounts can be fatal. Cats appear different: a small 2018 study (6 cats) found no hypoglycemia or liver enzyme changes at high doses, but the sample was tiny, so xylitol-containing human foods are still not recommended for cats, and must be kept away from dogs. |
| Spinach and urinary stones: verify history and evidence | A cat with stone history needs stone type and overall diet assessment. Spinach on a label does not establish calcium-oxalate causation. |
Ingredient details and sources
chocolate
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
cocoa · cocoa powder · cocoa butter · dark chocolate · cacao · 巧克力 · 可可 · 可可粉 · カカオ · チョコレート
Toxic compounds and how much is in each product
Merck gives approximate total methylxanthines: cocoa powder 28.5 mg/g, unsweetened baking chocolate 15.5 mg/g, dark chocolate 5.3–5.6 mg/g, milk chocolate 2.3 mg/g and white chocolate 0.04 mg/g. Brands and formulations vary; these are not exact assays for every product.
Dose data and prevention
The dose information Merck gives is mainly for dogs: mild signs at about 20 mg/kg (vomiting, diarrhea, thirst), cardiac effects at 40-50 mg/kg and seizures at 60 mg/kg or more. Cats have been studied less, so these numbers cannot be treated as safe limits for cats, and because cats are small even a little chocolate can reach a high dose per kilogram. Keep chocolate, cocoa powder and baking chocolate out of reach. If your cat eats some, contact your veterinarian and bring the packaging so that the ingredients and amount can be assessed.
Sources for this section
caffeine
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
coffee · coffee extract · tea extract · green tea extract · guarana · 咖啡因 · 咖啡 · 綠茶萃取 · カフェイン
Common sources
Caffeine (1,3,7-trimethylxanthine) is found in coffee, tea, energy drinks, cola and some medications and supplements. It belongs to the same methylxanthine group as the theobromine in chocolate and is one of the toxic compounds in chocolate poisoning (Merck Veterinary Manual).
How it acts and the signs
Merck explains that caffeine and theobromine competitively inhibit cellular adenosine receptors, which stimulates the nervous system, causes diuresis and speeds the heart, and may also raise circulating epinephrine and norepinephrine. Possible signs include vomiting, restlessness, agitation, high body temperature and a fast heart rate, and in severe cases seizures. Death is generally due to arrhythmia, hyperthermia or respiratory failure.
Sources for this section
alcohol
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
ethanol · ethyl alcohol · wine · beer · 酒精 · 乙醇 · アルコール
Common sources
The Merck Veterinary Manual notes that ethanol is found in alcoholic drinks, some rubbing alcohols, drug elixirs, some alcohol-based hand sanitizers and fermenting bread dough. Methanol is most common in windshield washer fluid; isopropanol is found in rubbing alcohol, some hand sanitizers and alcohol-based flea sprays for pets, and is about twice as toxic as ethanol. Alcohols are also absorbed through the skin, and poisoning from overspraying pets with alcohol-based flea sprays is not uncommon.
Signs and course
Merck reports that signs generally begin 30-60 minutes after ingestion and include vomiting, diarrhea, unsteadiness, disorientation (inebriation), lethargy, tremors and difficulty breathing; severe cases can progress to coma, low body temperature, seizures, a slow heart rate and respiratory depression. Alcohols and their metabolites are potent depressants of the central nervous system, and they also inhibit gluconeogenesis and so lower blood glucose. Death is generally due to respiratory failure, hypothermia, hypoglycemia or metabolic acidosis.
Sources for this section
active yeast
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
active dry yeast · live yeast · baker's yeast · yeast dough · fresh yeast · 活性酵母 · 生酵母 · 酵母菌 · イースト菌 · 生イースト
Why it is dangerous
Live yeast in raw dough keeps fermenting in the warm, moist stomach. The dough expands and distends the stomach, and the alcohol produced by fermentation is absorbed and causes alcohol poisoning and metabolic acidosis (Merck Veterinary Manual). Any species can be affected; dogs most commonly because of their indiscriminate eating. Baked bread and brewer's yeast powder are outside the scope of this warning.
Signs
Merck notes that early signs can include unproductive retching, abdominal distension and lethargy. As alcohol poisoning develops the animal becomes unsteady and disoriented, and eventually there may be profound depression of the nervous system, weakness, recumbency, low blood sugar, coma, low body temperature or seizures. Death is usually due to the metabolic effects of the alcohol rather than the stomach distension, and large dog breeds also face a risk of gastric dilatation-volvulus.
Sources for this section
grape
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
grapes · raisin · raisins · currant · sultana · 葡萄 · 葡萄乾 · レーズン · ブドウ
The known risk comes mainly from dogs
Grapes, raisins, Zante currants and tamarinds have caused stomach upset and acute kidney failure in dogs. The Merck Veterinary Manual states that all published cases so far are in dogs; there are only anecdotal reports of kidney failure in cats and ferrets, and no published case reports in these species.
What this means for cats
Because the evidence in cats is limited, no amount can be called safe, so it is still best not to feed grapes or raisins, and to keep raisin bread and mixed dried fruit out of reach. If your cat eats some, contact your veterinarian. Dog cases are treated mainly with early decontamination and intravenous fluids; whether that applies to a cat is for your veterinarian to decide.
Sources for this section
Avocado: do not transfer other species’ severe effects to cats
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
avocado · avocado meal · avocado oil · 酪梨 · 牛油果 · アボカド
Better documented species
Merck describes persin-related severe effects in some birds and herbivores, and obstruction after dogs swallowed whole pits. These cases do not prove equivalent effects from a little flesh in a cat.
Assess the actual feline exposure
Flesh, leaves and pits are different exposures; guacamole may contain onion or garlic. These references do not establish that avocado fat causes feline pancreatitis or diagnose an individual cat.
Nutmeg exposure: food seasoning versus spice powder
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
nutmeg · mace · 肉豆蔻 · ナツメグ
Grouping does not mean these are the same ingredient or carry the same risk. Check the complete product label.
Names and function
Pet Poison Helpline describes neurologic and other effects from substantial myristicin exposure. Its guide does not provide a universal safe gram amount for every cat; this site does not use 5 g as a safety or care threshold.
What the label can and cannot show
Keep package, ingredients and remaining-amount photos, timing and whether exposure involved food or a spilled jar. Preserve other ingredients in mixed foods rather than checking nutmeg alone.
Sources for this section
xylitol
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
木糖醇 · xylit · birch sugar · キシリトール
Toxicity in cats versus dogs
Xylitol is extremely dangerous to dogs, triggering a large release of insulin that causes acute hypoglycemia and liver failure. Cats appear to be different: in a 2018 study (Jerzsele et al.), six healthy middle-aged cats were given xylitol orally at 100, 500 and 1,000 mg/kg (doses considered toxic to dogs) and followed for 72 hours. Blood counts and biochemistry, including liver enzymes, showed no significant changes; blood glucose did not fall, with only a mild rise at the highest dose that stayed within the physiological range. The authors concluded that xylitol did not induce toxic effects in cats.
How to read this result
This was a small study of only six cats, using plain xylitol solution rather than commercial products, so it cannot prove that every dose is safe. Commercial gum, baked goods and toothpaste contain other ingredients, and sugar alcohols in large amounts can cause soft stool or diarrhea. Xylitol-containing human foods are therefore still not recommended for cats, and in a home with a dog they should be stored out of reach. If your cat eats a large amount of a xylitol product, contact your veterinarian rather than judging it yourself.
Spinach and urinary stones: verify history and evidence
For a known or suspected exposure, contact a veterinarian without waiting for signs or an online safe-dose estimate; keep the product and timing details.
Label names and search terms covered here
spinach · dried spinach · spinach powder · 菠菜 · 菠菜粉 · 菠菜乾 · ほうれん草 · ほうれん草パウダー
Names and function
The cited Houston study describes submitted feline plugs and stones, not a spinach-feeding experiment. It does not justify saying spinach caused a cat’s stone.
A practical checking process
Bring old urine, stone-analysis or imaging findings plus all foods and supplements. Ask about the stone type, current goals and which extras should change.
Prepare a verification record
Entries stay in this tab and clear on refresh. Download a text copy to discuss with the manufacturer or veterinarian.
Prepared from the cited sources; not reviewed by a veterinarian. Scope and limitations are stated in each section. This is not an individual product safety assessment or diagnosis.
Related app: Snifflo (Google Play · App Store)