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Toxic Food Comparison:
What Kills Dogs vs. Cats
Side-by-side severity rankings for every toxic substance in our database. See which toxins are more dangerous for dogs, which are worse for cats, and what kills both — in one chart.
Before you read any further
If your pet ate something toxic, you need this kit NOW — not after scrolling.
This pet first aid kit has hydrogen peroxide for induced vomiting, bandages, and a first aid guide. Every second counts when toxins are absorbing into your pet's bloodstream.
Get the Pet First Aid Kit — Be Prepared →How to Read This Chart
GI upset, recover at home
Vet visit likely needed
Emergency vet required
Can kill without treatment
Complete Toxicity Comparison Table
| Substance | 🐕 Dog Severity | 🐈 Cat Severity | Onset | Vet Cost | More Dangerous For |
|---|---|---|---|---|---|
| Grapes and Raisins | FATAL | severe | 6–12 hours | $500–$5000 | 🐕 Dogs |
| Onions and Garlic | severe | FATAL | 1–5 days | $300–$5000 | 🐈 Cats |
| Xylitol (Birch Sugar) | FATAL | moderate | 30 minutes – 12 hours | $500–$8000 | 🐕 Dogs |
| Antifreeze (Ethylene Glycol) | FATAL | FATAL | 30 minutes – 12 hours | $500–$8000 | Both |
| Ibuprofen (Advil) | FATAL | FATAL | 2–6 hours | $300–$6000 | Both |
| Rat Poison (Bromethalin) | FATAL | — | 24–72 hours (may be delayed) | $500–$6000 | 🐕 Dogs |
| Sago Palm | FATAL | FATAL | 2–12 hours | $1000–$8000 | Both |
| Lilies (All Species) | — | FATAL | 2–12 hours | $500–$10000 | 🐈 Cats |
| Acetaminophen (Tylenol) | — | FATAL | 1–4 hours | $500–$6000 | 🐈 Cats |
| Dog Flea Medication (Permethrin) | — | FATAL | 1–12 hours (varies by exposure route) | $300–$4000 | 🐈 Cats |
| Peanut Butter (Xylitol Risk) | FATAL | — | 30–60 minutes (if xylitol present) | $50–$5000 | 🐕 Dogs |
| Slugs and Snails (Lungworm) | FATAL | — | 1–4 weeks for symptoms | $100–$4000 | 🐕 Dogs |
| Raw Salmon (Salmon Poisoning) | FATAL | — | 5-7 days | $300–$3000 | 🐕 Dogs |
| String, Yarn, and Thread (Linear Foreign Body) | — | FATAL | Hours to 2 days | $800–$6000 | 🐈 Cats |
| Blue-Green Algae (Cyanobacteria) | FATAL | — | 15 minutes to 24 hours | $500–$8000 | 🐕 Dogs |
| Chocolate | severe | severe | 6–12 hours | $300–$3500 | Both |
| Caffeine (Coffee/Tea) | severe | — | 1–2 hours | $300–$4000 | 🐕 Dogs |
| Alcohol | severe | — | 30–60 minutes | $300–$4000 | 🐕 Dogs |
| Yeast Dough | severe | — | 30–60 minutes | $500–$5000 | 🐕 Dogs |
| Salt (Sodium Chloride) | severe | — | 1–12 hours | $300–$4000 | 🐕 Dogs |
| Essential Oils (Tea Tree, Eucalyptus) | — | severe | 2–12 hours (varies by exposure route) | $200–$4000 | 🐈 Cats |
| Azaleas and Rhododendrons | — | severe | 1–6 hours | $200–$3000 | 🐈 Cats |
| Tylenol (Acetaminophen) | severe | — | 1–4 hours | $300–$5000 | 🐕 Dogs |
| Rhubarb | severe | — | 2-8 hours | $400–$4000 | 🐕 Dogs |
| Pennies (Zinc Toxicity) | severe | — | 1-3 days | $800–$5000 | 🐕 Dogs |
| Moldy Food (Tremorgenic Mycotoxins) | severe | — | 30 minutes to 2 hours | $300–$3000 | 🐕 Dogs |
| Batteries (Alkaline and Lithium) | severe | — | Immediate (burns within 15-30 minutes) | $500–$5000 | 🐕 Dogs |
| Vitamin D (Supplements and Rodenticide) | severe | — | 12-36 hours | $500–$5000 | 🐕 Dogs |
| Essential Oils (Tea Tree, Eucalyptus, Pennyroyal, Wintergreen, Clove) | severe | — | — | $300–$3000 | 🐕 Dogs |
| Cooked Bones | severe | — | Hours to days (depends on damage) | $500–$8000 | 🐕 Dogs |
| Human Antidepressants (SSRIs like Prozac, Zoloft, Lexapro) | — | severe | 1-4 hours | $400–$4000 | 🐈 Cats |
| Daffodils and Narcissus | — | severe | 15 minutes to 6 hours | $300–$3000 | 🐈 Cats |
| Macadamia Nuts | moderate | — | 3–12 hours | $150–$2000 | 🐕 Dogs |
| Marijuana (Cannabis) | moderate | moderate | 30–60 minutes (edibles may be longer) | $200–$3000 | Both |
| Pothos (Devil's Ivy) | — | moderate | Immediate (within minutes) | $0–$1500 | 🐈 Cats |
| Aloe Vera | — | moderate | 6–12 hours | $0–$1500 | 🐈 Cats |
| Tulips and Daffodils | — | moderate | 1–6 hours | $0–$2000 | 🐈 Cats |
| Garlic Bread | moderate | — | 1–5 days for anemia signs | $200–$3500 | 🐕 Dogs |
| Nutmeg | moderate | — | 3–8 hours | $200–$2000 | 🐕 Dogs |
| Tomato Plant (Leaves and Stems) | moderate | — | 2-8 hours | $100–$1500 | 🐕 Dogs |
| Coffee Grounds and Coffee Beans | moderate | — | 1-2 hours | $200–$2500 | 🐕 Dogs |
| Avocado | mild | — | 6–12 hours | $150–$3000 | 🐕 Dogs |
| Spinach | mild | — | Days to weeks (cumulative) | $50–$500 | 🐕 Dogs |
| Milk and Dairy Products | — | mild | 8-12 hours | $0–$800 | 🐈 Cats |
| Glow Sticks and Glow Jewelry | — | mild | Immediate (seconds to minutes) | $0–$300 | 🐈 Cats |
| Tuna (Excessive Human-Grade Canned Tuna) | — | mild | Weeks to months (cumulative) | $50–$1000 | 🐈 Cats |
| Silica Gel Packets (Desiccant Packets) | mild | — | 1-6 hours | $0–$2000 | 🐕 Dogs |
Key Findings: What's More Dangerous for Dogs vs. Cats
🐕 More Dangerous for Dogs
- • Grapes & Raisins — Unpredictable kidney failure; no known safe dose
- • Xylitol (Birch Sugar) — Rapid hypoglycemia and liver failure
- • Blue-Green Algae — Can kill within 20 minutes of drinking contaminated water
- • Raw Salmon — Fatal Salmon Poisoning Disease unique to canids
- • Macadamia Nuts — Neurological toxicity unique to dogs
🐈 More Dangerous for Cats
- • Lilies (ALL species) — Lethal kidney failure from licking pollen; cats only
- • Dog Flea Medication (Permethrin) — Lethal seizures; cats lack the enzyme to process it
- • Acetaminophen (Tylenol) — Destroys red blood cells; one pill can kill a cat
- • Essential Oils — Cats' livers cannot metabolize terpenes at all
- • String/Yarn — Linear foreign body obstruction; cats are uniquely prone
Don't Wait Until You're in the Emergency Room
This pet emergency handbook covers every poisoning scenario with step-by-step instructions. It's the book that saves you from Googling in a panic at 2 AM.
Get the Emergency Handbook — Know Before It Happens →Frequently Asked Questions
What food is most toxic to dogs?
Grapes and raisins are among the most lethal foods for dogs because they cause acute kidney failure with no predictable dose threshold. Xylitol (birch sugar) is equally dangerous, causing rapid hypoglycemia and liver failure. Both can be fatal from small amounts.
What food is most toxic to cats?
Lilies are the single most deadly substance for cats. Even licking pollen off their fur or drinking water from a lily vase causes fatal kidney failure. A single Tylenol pill can also kill a cat. Dog flea medication containing permethrin causes lethal seizures in cats.
Are there toxins that are dangerous for both dogs and cats?
Yes. Chocolate, antifreeze (ethylene glycol), sago palm, and marijuana are all severely toxic to both species. Always check individual pages for species-specific severity, as the same substance can affect dogs and cats differently.
How quickly do I need to act if my pet ate something toxic?
Immediately. For many toxins (antifreeze, blue-green algae, lilies), irreversible damage begins within hours. Call your vet or get to an emergency clinic right away. Do not wait for symptoms to appear — by the time you see symptoms, significant damage may already be done.
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