Nuts & Seeds

Walnuts

Toxic for Cats

Danger — seek vet help

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For Dogs

Toxic

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For Cats

Toxic

View dog safety info →

Symptoms to Watch For

Vomiting, tremors, seizures (black walnuts)

What You Need to Know

Black walnuts are toxic. English walnuts are less dangerous but high in fat. Moldy walnuts contain tremorgenic mycotoxins causing seizures. Shells are an obstruction risk.

Source: ASPCA Animal Poison Control

If your cat ingested this, act fast

Call ASPCA Poison Control: (888) 426-4435 or your emergency vet immediately.

View full emergency guide →

Safe Alternatives Your Cat CAN Have

Walnuts isn't safe, but these are vet-approved:

Frequently Asked Questions

Is walnuts safe for cats?

Walnuts is considered TOXIC for cats. Black walnuts are toxic. English walnuts are less dangerous but high in fat. Moldy walnuts contain tremorgenic mycotoxins causing seizures. Shells are an obstruction risk.

What are the symptoms if my cat eats walnuts?

Symptoms may include: Vomiting, tremors, seizures (black walnuts).

What should I do if my cat eats walnuts?

Contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. Do not induce vomiting unless instructed by a professional.