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Black Walnut Sawdust Dog Toxicity: Mold Risk, Not Juglone

Symptoms Match Walnut Mold Poisoning

Black walnut hulls/sawdust can harbor Penicillium mold producing tremorgenic mycotoxins (penitrem A). Signs: vomiting, tremors, ataxia, hyperthermia, elevated liver enzymes—exactly your dog’s presentation.

Key Points

Fresh sawdust from recently cut tree = high mold risk.
Juglone (allelopathic compound) causes laminitis in horses, not acute neurotoxicosis in dogs.
Veterinary treatment: supportive care, methocarbamol for tremors.

Reference: Lace to Leather – Fatal to Dogs.

Trees: Leaf Spots on Young Black Walnut: Harmless Fungi or Galls; Black Rot on Grapes/Apples: No Threat to Walnut Trees; Planting Hybrid Maples Near Black Walnut: Juglone Tolerance; Black Walnut Husks with Maggots: Nuts Are Still Edible; Black Walnut Toxicity: Why Camellias Fail Under Juglone; Dog Eating Walnuts: Juglone Toxicity Symptoms and Prevention; Identifying and Managing Walnut Husk Maggots and Flies; Black Walnut Hull Toxicity: Juglone Effects on Plants, Not Human Anaphylaxis; Growing Grass Under Black Walnut Trees: Tolerant Species by Region; Black Walnut Allelopathy: Juglone-Sensitive and Tolerant Plants for Your Landscape

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