Peanuts

Symptoms reported in cats

Most serious first.

1. 1
   Aflatoxicosis (From Moldy Peanuts) Acute (shortly after a large dose) or chronic (developing progressively over time with low-dose expo · Peanuts are susceptible to growing Aspergillus fungi, which produce toxic aflatoxins1. Ingestion of these moldy peanuts results in severe liver damage and the rupturing of blood vessels.
2. 2
   Sodium Ion Poisoning (From Salted Peanuts) Within minutes to hours of ingestion · Human peanut snacks are frequently heavily seasoned with salt, which unnecessarily increases the metabolic burden on a cat's kidneys.
3. 3
   Indigestion and Pancreatitis (From High Fat Content) Within a few hours (for standard indigestion) or progressively over days (for pancreatitis) · Peanuts are rich in oils and have a hard physical texture that easily leads to indigestion and diarrhea in cats4. Furthermore, consuming high-fat foods can trigger pancreatitis, a painful and potentially life-threatening inflammation of the pancreas.
4. 4
   Allergic Reaction (Rare) Immediate to a few hours. · Food-triggered allergic reactions, including rare anaphylaxis, are possible in cats, but no authoritative veterinary source documents peanut-specific fatal allergic reactions in cats. Treat this as a rare, unconfirmed risk rather than an expected outcome.
5. 5
   Xylitol (From Peanut Butter) — Dog Hazard, Not a Cat Hazard Many peanut butters are sweetened with xylitol. This is a serious, sometimes fatal poison for dogs, but it is not a documented hazard for cats: the Merck Veterinary Manual states that cats are not at risk for hypoglycemia or liver injury from xylitol, and the ASPCA reports no known xylitol toxicity in cats. Xylitol-sweetened peanut butter is still best kept away from cats as a precaution.

Important notes

Plain, unsalted peanuts do not contain any specific poisons that are toxic to cats, but they are still not a good snack choice. Peanuts are very high in fat, and cats have a hard time digesting them. Eating too much fat can lead to pancreatitis, which is a painful and potentially life-threatening swelling of the pancreas. Another hidden danger with peanuts is mold. Peanuts can easily grow a type of mold that produces aflatoxins, which can cause severe liver damage if eaten. Additionally, most peanuts sold in stores are roasted with a lot of salt or artificial flavorings, which are harmful to a cat's kidneys. Peanut butter is also very high in fat and salt. Some brands contain xylitol, a sweetener that is dangerous to dogs; unlike in dogs, xylitol is not a documented poison for cats, but it is still best avoided. While a single plain peanut probably will not hurt your cat, regular feeding can cause long-term health issues. Keep salted peanuts and peanut butter away from your cat. If your cat eats moldy peanuts, contact a veterinarian right away.

• Not acutely toxic: plain peanuts do not contain cat-specific toxins
• Fat risk: very high fat content; regular feeding can cause pancreatitis (painful, potentially fatal pancreatic inflammation)
• Aflatoxin risk: mouldy or improperly stored peanuts may contain aflatoxins, which cause liver damage
• Salted, flavoured, or roasted peanuts: high sodium and artificial seasonings are harmful to cats
• Peanut butter: high in fat and often excessive salt — the relevant cat risks; xylitol in some brands is a serious dog hazard but is not documented to harm cats (Merck/ASPCA); a tiny taste of plain peanut butter is unlikely to cause harm