Can Cats Eat Brazil Nuts?

🚫 Not Recommended

⚠️ Educational info only. If your pet just ate something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.

No. One Brazil nut carries more selenium than a small cat should ever eat at once.

Why it’s a problem

Brazil nuts are the most selenium-dense food commonly found in kitchens, and a single nut can hold several times a small animal’s sensible daily intake. Selenium toxicity causes vomiting, hair loss and nerve damage, and the nuts’ extreme fat content adds stomach upset on top.

How to serve it safely

Keep Brazil nuts in sealed containers high up, and never use them as a treat for any pet.

Warning signs to watch for

Vomiting, diarrhea, garlic-like breath odor, lethargy and, with repeated exposure, hair loss and wobbliness from selenium toxicity.

When to call the vet

Call your vet if a cat eats a Brazil nut, and describe how many and how often — repeated doses matter more than a single one.

Common questions

Is a small piece of one nut safe?

A fragment is unlikely to cause acute harm, but with such concentrated selenium and fat, there is no safe routine way to share them.

More foods for cats

Salmon✅ SafeYes, when fully cooked and unseasoned. Salmon is a nutritious fish most cats enjoy.Tuna⚠️ In ModerationOccasional small amounts only — tuna should be a treat, never a meal.Cow’s Milk🚫 Not RecommendedBetter to skip it. Most adult cats are lactose intolerant and milk gives them stomach upset.Garlic☠️ ToxicNo. Garlic is poisonous to cats — even more potent per gram than onion.Cooked Eggs✅ SafeYes, fully cooked and plain. Eggs are a protein-rich treat cats usually enjoy.Cheese⚠️ In ModerationSmall bites are usually fine, but many cats cannot digest dairy well.

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away.