According to the Global Healing Center, black walnuts and their hulls are an excellent supplement when eaten by humans. Many pet owners wonder if they can give black walnuts, or a diluted version of black walnuts, to their dogs.
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Toxic
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The black walnut is toxic to dogs; a dog who eats the seed hulls will experience diarrhea, vomiting and stomach upset. The black walnut also develops a mold that can cause seizures and tremors.
Geography
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Black walnuts grow along the eastern seaboard and into the Midwest. They grow wild, so your dog could be poisoned eating the hulls.
Identification
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Black walnut trees can grow to 60 or 80 feet tall; their leaves are 1 to 2 feet long with 13 to 23 tapered-pointed, toothed leaflets. Their nuts and hulls are encased in husks that are 2 to 4 inches in diameter.
Misconceptions
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Many people believe that, because a nut or particular food is safe for humans, it is safe for dogs. This is not the case; black walnuts can be eaten by humans but are toxic to dogs, horses and other animals.
Diluting
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Even when diluting a poisonous substance, you run a risk of making your dog very sick. Therefore you should never feed black walnut hulls, even in the diluted form, to your dog.
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