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Cats | Household Toxins and Hazards

Cats | Household Toxins and Hazards

The full contents of the "household toxins and hazards" column in the 12-column knowledge tree for cats. Where the original text could not obtain an authoritative figure, it leaves the field blank and states why; this site preserves that as-is and does not fill in numbers on its behalf. The disease column is published separately as vet/cat-common-diseases and is not repeated here.

This article is compiled from the cat chapter of the veterinary animal encyclopaedia. The same sign calls for different handling in different species, and copying what works for another species can do harm — first confirm which animal you are dealing with.
SubstanceWhy it is especially dangerous to catsPresentationWhat to do immediately
**Lilies (*Lilium* and *Hemerocallis* spp., including pollen and vase water)**Acute tubular necrosis specific to catsVomiting, drooling, dullness → renal failure within daysSeek care on contact, do not wait for signs; do not have lilies in a house with cats
Acetaminophen / paracetamolDeficient glucuronidation (C-2)Swelling of the face / paws, muddy-grey or brown mucous membranes, rapid breathing, liver injuryA very small amount can be lethal; seek care immediately
Human NSAIDs (ibuprofen / naproxen / aspirin, etc.)Long half-life, renal and gastric toxicityVomiting (which may contain blood), not eating, renal failureSeek care immediately; never give a cat any human painkiller on your own
Canine synthetic pyrethroid permethrin spot-onsCats cannot metabolise itTremors, seizures, abnormal body temperature, deathSeek care immediately; do nothing beyond rinsing, and keep the cat warm on the way
Essential oils and phenolic cleaners (tea tree, eucalyptus, citrus, pine, mint, wintergreen; cresol / phenolic floor cleaners)Dermal absorption plus ingestion during grooming; passive exposure from diffusersDrooling, weakness, hepatotoxicity, skin burnsStop use and seek care; do not use diffusers or phenolic cleaners in a house with cats
Ethylene glycol antifreezeSweet-tasting, lethal renal failure at extremely low doses, with a very short golden windowWalking unsteadily as if drunk → vomiting → anuric renal failureOne of the most urgent of all; seek care immediately
Rodenticides (anticoagulant type / bromethalin / cholecalciferol)Each type has a different mechanism and different handlingBleeding / neurological signs / hypercalcaemic renal injurySeek care immediately and take the packaging with you (the active ingredient determines the antidotal direction)
Slug bait (metaldehyde)Strongly seizure-inducingTremors, seizures, hyperthermiaSeek care immediately
Allium species (onion, garlic, chives, spring onion, including powders and soups)Oxidative haemolysis, Heinz bodiesWeakness, pale mucous membranes, dark urineSeek care
Grapes and raisinsClearly nephrotoxic in dogs; data in cats are limited but avoid entirelyVomiting, renal injurySeek care
Chocolate / caffeine / teaMethylxanthinesAgitation, arrhythmia, seizuresSeek care
XylitolClear in dogs, evidence in cats is limited but still avoid—Avoid contact
Alcohol, raw doughAlcohol poisoning, gastric fermentation and distensionWeakness, abdominal distensionSeek care
Human topical medicines: 5-fluorouracil cream, oestrogen gel / patch, calcipotriol, corticosteroid-containing ointmentsPoisoning from licking or rubbing against them; 5-FU is extremely lethal to catsVomiting, seizures, bone-marrow suppressionSeek care immediately; cover the skin after application and do not share a bed with the cat
Human psychiatric / cardiovascular / diabetes medicationsDropped on the floor, they get played with and swallowedVaries by drugLock the pill box away; if ingested, seek care immediately and bring the pill box
Lead, zinc (coins, toys, plumbing fittings), button batteriesHeavy-metal poisoning / corrosive burnsVomiting, anaemia, oral burnsSeek care immediately
Plants (other than lilies): sago palm, azalea, oleander, tulip and hyacinth bulbs, pothos / peace lily (oral irritation), ivy, monstera, cannabis and its productsHepatotoxicity / cardiotoxicity / oral burns / neurological signsVaries by speciesSeek care and bring a photograph of the plant
String-like items: sewing thread, yarn, dental floss, hair ties, ribbon, Christmas tinsel, earphone cablesLinear foreign bodies saw through the intestineRepeated vomiting, not eatingDo not pull; seek care immediately
Raw meat / raw fishSalmonella, toxoplasma, thiaminase causing B1 deficiencyGastroenteritis / neurological signsSwitch to a complete diet
Physical hazardsUnclosed washing machines and tumble dryers, drawers, balconies without screens, electrical cables, crush injuries from doors, high temperatures on glassed balconies, insecticide sprays and foggers, freshly mopped wet floors, fumes from dry-heated non-stick pans—Check them off one by one (see the safety row in column 3)
General rule for poisoning: ① do not induce vomiting yourself (emesis in cats must be performed by a veterinarian) ② do not give milk / oil / salt on your own ③ bring the packaging, the ingredient label, the plant itself or a photograph with you ④ note down the approximate time ⑤ the telephone numbers of 24-hour animal emergency and poison-advice lines in your area 【depends on locality, and this file does not supply specific numbers — this is region-specific information and belongs to the do-not-fill category】; ask your local animal hospital or animal poison advice centre and write it on the fridge in advance.

The content above is copied cell by cell from the encyclopaedia chapter text, without rewriting or condensing; treatment direction is given only by category, with no drug names or dosages, and medication must be prescribed by a veterinarian.


The limits of this content

The content of this article comes from the cat chapter of the veterinary encyclopaedia (the original location and content hash are given in the evidence chain). The sources at the end are the authoritative material cited by that chapter, a chapter-level correspondence. This is educational information and cannot replace the diagnosis and prescription of a practising veterinarian; in an emergency, seek care immediately. This article has not been clinically reviewed by a named veterinarian.

Reading map; items appear in article order: The limits of this content; Substance; Lilies (Lilium and Hemerocallis spp., including pollen and vase water); Acetaminophen / paracetamol; Human NSAIDs (ibuprofen / naproxen / aspirin, etc.); Canine synthetic pyrethroid permethrin spot-ons
From the article text; read alongside the full article.

FAQ

What should be noted about lilies (*Lilium* and *Hemerocallis* spp., including pollen and vase water) for cats?
Acute tubular necrosis specific to cats | Vomiting, drooling, dullness → renal failure within days | Seek care on contact, do not wait for signs; do not have lilies in a house with cats。
What should be noted about acetaminophen / paracetamol for cats?
Deficient glucuronidation (C-2) | Swelling of the face / paws, muddy-grey or brown mucous membranes, rapid breathing, liver injury | A very small amount can be lethal; seek care immediately。
What should be noted about Human NSAIDs (ibuprofen / naproxen / aspirin, etc.) for cats?
Long half-life, renal and gastric toxicity | Vomiting (which may contain blood), not eating, renal failure | Seek care immediately; never give a cat any human painkiller on your own。

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Jane・《Cats | Household Toxins and Hazards》・IDAEO 知識庫・2026-08-13・https://km.idaeo.ai/post/vet/cat-household-toxins

Updated 2026-08-15

更新 2026-08-15T15:41:02.273Z · server-rendered · four-language · IDAEO 知識庫