Can dogs eat walnuts?
UNSAFE Category: Nut · Source verified September 2026
Black walnuts contain juglone, toxic to dogs, and moldy walnuts of any type grow tremorgenic mycotoxins that cause seizures. Store-bought English walnuts in small amounts are lower risk, but the combination of mold risk and high fat makes all walnuts a poor choice. Pancreatitis follows high-fat treats in susceptible dogs.
Symptoms to watch for
- tremors
- vomiting
- seizures
- abdominal pain
If you suspect poisoning: call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 (available 24/7). Do not induce vomiting unless instructed by a professional.
Quick answers
Can dogs eat walnuts?
No. Black walnuts contain juglone, toxic to dogs, and moldy walnuts of any type grow tremorgenic mycotoxins that cause seizures. Store-bought English walnuts in small amounts are lower risk, but the combination of mold risk and high fat makes all walnuts a poor choice. Pancreatitis follows high-fat treats in susceptible dogs.
What are the symptoms if my dog eats walnuts?
Watch for tremors, vomiting, seizures, abdominal pain. Symptoms may appear within hours. When in doubt, call your vet.
What should I do if my dog ate walnuts?
Call your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 right away. Do not wait for symptoms — early treatment is dramatically cheaper and safer.
Related foods
Can dogs eat macadamia nuts? · Can dogs eat almonds? · Can dogs eat cashews? · Can dogs eat pistachios? · Can dogs eat pecans? · Can dogs eat peanuts?
Source: ASPCA Animal Poison Control. This page is informational and is not veterinary advice.