Can Cat Eat Black Walnut?

Also known as:
Juglans nigra
The Black Walnut tree is generally safe for cats, but toxic to horses and dogs under certain conditions.
SafePlant

Generally Safe for Cats
This food is generally safe for cats when given in appropriate amounts.
For cats, the tree itself is not toxic. The danger for other animals comes from a mold that can grow on decaying nuts, which produces a neurotoxin. This is primarily a concern for dogs who might eat moldy nuts. For horses, contact with the wood shavings causes laminitis.
Detailed Information
For cats, the tree itself is not toxic. The danger for other animals comes from a mold that can grow on decaying nuts, which produces a neurotoxin. This is primarily a concern for dogs who might eat moldy nuts. For horses, contact with the wood shavings causes laminitis.
Potential Risks
- Toxic to cats
Recommendations
Your cat is safe around a Black Walnut tree. However, to be safe for all pets, ensure they do not eat old, moldy nuts from the ground.
Veterinary Advice
Generally safe when given in moderation as part of a balanced diet.
Quick Facts
Safety LevelSafe
CategoryPlant
Last Updated7/24/2025
Sources
- ASPCA Animal Poison Control Center
- Veterinary Nutritionist Guidelines
- Pet Food Safety Research