By Dial A Vet Veterinary Team
Dogs explore with their mouths, so everyday foods, medicines, plants, and chemicals can become poison risks. This page is a broad "what to avoid" map with links into deeper Dial A Vet toxin articles where they exist. It is not a complete poison encyclopedia and does not replace a poison hotline or emergency clinic.
Related deep dives: chocolate, xylitol, antifreeze, toxic mushrooms, blue-green algae.
Key takeaways
- Common high-risk categories include human foods, OTC/prescription drugs, rodenticides, antifreeze, toxic plants, and some outdoor toxins.
- Dose, product concentration, and dog size change risk; "a little bit" is not always safe.
- Call a veterinarian or animal poison control as soon as you know of an exposure, even if your dog still looks fine.
- Do not induce vomiting unless a veterinarian or poison specialist instructs you for that specific toxin and timing.
- Store hazards up high, sealed, and out of scavenger reach.
Foods that often cause problems
- Chocolate and cocoa: theobromine and caffeine; darker and baking products are usually denser in toxin per ounce.
- Xylitol (birch sugar): sugar-free gum, candy, some peanut butters and toothpastes; can cause low blood sugar and, at higher doses, liver injury.
- Grapes and raisins: associated with kidney injury in some dogs; amounts that cause harm can be small.
- Onions, garlic, chives, leeks: can damage red blood cells with enough exposure (including concentrated powders).
- Alcohol, raw yeast dough, high-salt snacks, macadamia nuts: various neurologic, GI, or metabolic risks.
Medications and chemicals
- Human NSAIDs (ibuprofen, naproxen), acetaminophen, antidepressants, ADHD medications, and heart drugs
- Veterinary drugs given at the wrong dose or to the wrong pet
- Rodenticides (bleeding, neurologic, or vitamin D-type products depending on active ingredient)
- Ethylene glycol antifreeze and some other automotive fluids
- Concentrated cleaning agents, mothballs, essential oils, and some insecticides
Plants and outdoor hazards
- Sago palm, oleander, foxglove, and many other landscaping plants
- Wild mushrooms (assume unsafe unless an expert identifies them)
- Blue-green algae blooms in warm lakes and ponds
- Compost, moldy food, and garbage toxins
What to do after a possible poisoning
- Remove access to the product and keep packaging for identification.
- Note approximate amount, time, and your dog's weight.
- Call your veterinarian, an emergency hospital, or an animal poison hotline promptly.
- Do not give salt, oil, milk, peroxide, or leftover human meds unless directed.
Prevention checklist
- Use childproof storage for meds, gum, and cleaners
- Ask guests not to share table food without checking ingredients
- Choose pet-safe pest control and store it locked
- Scan yards for mushrooms after rain and remove them when found
FAQ
Which poison is "the worst"?
It depends on dose and product. Antifreeze, some rodenticides, xylitol, and certain mushrooms or blooms can be catastrophic quickly. Treat unknown ingestions as urgent until a professional says otherwise.
Is milk a remedy?
No. Milk is not an antidote for common dog poisons and can worsen vomiting in some cases.
Talk with a vet
Active exposure or symptoms: contact a clinic or poison hotline now. For home hazard reviews when your dog is well, book at dialavet.com.
References
- ASPCA. The top 10 toxins of 2025.
- Pet Poison Helpline. Top 20 toxins in pets.
- Merck Veterinary Manual. Overview of veterinary toxicology.
- VCA Animal Hospitals. Common over-the-counter toxins in dogs.
Disclaimer: Educational overview only. This list is incomplete. For any suspected poisoning, seek professional veterinary or poison-hotline guidance immediately.