Water Hickory Toxic?

Updated 2026-03-06| 3 min read| 3,195 found this helpful

No confirmed toxicity to cats, dogs, or horses is reported for this plant.

Incidental ingestion or skin contact is not expected to cause adverse health effects.

Consult a medical/veterinary provider if unusual symptoms occur post-exposure to rule out other causes.

FAQ

Is Water Hickory toxic to Humans?

No confirmed toxic symptoms reported; mild temporary gastrointestinal upset may occur in rare cases of very large ingestion. (Non-toxic)

Is Water Hickory toxic to Cats?

No toxic symptoms confirmed; no adverse effects are expected from standard exposure or small ingestion. (Non-toxic)

Is Water Hickory toxic to Dogs?

No toxic symptoms confirmed; no adverse effects are expected from standard exposure or small ingestion. (Non-toxic)

Is Water Hickory toxic to Horses?

No toxic symptoms confirmed; no adverse effects are expected from standard exposure or small ingestion. (Non-toxic)

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Toxicity Details

Humans

Non-toxic

No confirmed toxic symptoms reported; mild temporary gastrointestinal upset may occur in rare cases of very large ingestion.

Cats

Non-toxic

No toxic symptoms confirmed; no adverse effects are expected from standard exposure or small ingestion.

Dogs

Non-toxic

No toxic symptoms confirmed; no adverse effects are expected from standard exposure or small ingestion.

Horses

Non-toxic

No toxic symptoms confirmed; no adverse effects are expected from standard exposure or small ingestion.

Toxicity Snapshot

Toxic PartsNo plant parts are confirmed to be toxic to common domestic companion or livestock animals.

Exposure RouteIncidental ingestion, skin contact; no toxic effects are documented for either exposure route.

Toxic CompoundsNo toxic, pharmacologically active compounds linked to adverse animal effects have been identified for this species to date.

First Aid & Prevention

First 30 Minutes

• Monitor for unusual gastrointestinal distress if large quantities of the plant are ingested.
• Rinse exposed skin with mild soap and cool water if minor irritation develops.
• Collect a sample of the plant for formal identification if unexpected symptoms appear.

Contact Vet Immediately

• If persistent vomiting, diarrhea, or lethargy occurs within 24 hours of ingestion.
• If your animal has a documented sensitivity to Juglandaceae family plants or tree nuts.

Prevention

• Avoid feeding untested wild plant material to pets or livestock as a general safety precaution.
• Store collected hickory wood or nuts out of reach of animals prone to compulsive over-ingestion.

Treatment & Prognosis

• Supportive care for mild gastrointestinal symptoms if they develop.
• No specific antidote is required, as no toxic effect of this plant is confirmed.

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Professional Toxicology

Scientific NameCarya aquatica

AliasesBitter Pecan、Swamp Hickory

Toxicity Grade

HumansNon-toxic

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

No specific organ toxicity has been reported for this species.

Mechanism of Action

• No toxic mechanism has been identified, as the plant has no confirmed adverse effects on common domestic animals.

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: No confirmed toxicity reported; large ingestion may cause mild, temporary digestive upset

Sheep: No adverse effects documented from standard exposure to Water Hickory foliage or nuts

Poultry: No reported toxic effects from consumption of small amounts of leaves or immature nuts

Confusion Risk

The following plants look similar and may be confused:

Pecan Carya illinoinensis

Visually similar due to shared pinnate leaf structure and nut production; key difference is Water Hickory produces smaller, bitter nuts and grows exclusively in wetland habitats, while pecan produces large, sweet edible nuts.

Black Walnut Juglans nigra

Shares the same plant family and compound leaf structure; key difference is Black Walnut produces round, dark-husked nuts, while Water Hickory nuts have distinct 4-winged husks.

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Related Toxic Plants

Black Walnut

Juglans nigra

Moderate toxicity to horses, low toxicity to dogs and cats

Butternut

Juglans cinerea

Low to moderate toxicity to horses and dogs

Common Walnut

Juglans regia

Low toxicity to dogs and cats, moderate toxicity to horses

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Data Sources

1. ASPCA Animal Poison Control

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.