Cats & Dogs
Generally safeConsulted references do not classify the plant as toxic for that pet type, while still allowing for mild GI upset if large amounts are chewed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
Pet safety reference
Bitternut Hickory
Carya cordiformis
The Bitternut Hickory is a deciduous tree known for its distinctively bitter nuts and compound leaves. While generally considered safe for pets, the fibrous nature of the plant material can occasionally cause mild digestive discomfort if consumed in large quantities.
BitternutCarya cordiformisSwamp Hickory
- Light
- Full sun to partial shade
- Habit
- Deciduous tree
- Care
- Low
Safety status
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Cats — concern notes
Common signs
None expected; however, ingestion of large amounts of fibrous plant matter may lead to mild vomiting or diarrhea.
Escalation note
This plant is considered non-toxic. If your cat consumes a significant amount and shows signs of distress, please contact your veterinarian.
Dogs — concern notes
Common signs
None expected; however, ingestion of large amounts of fibrous plant matter may lead to mild vomiting or diarrhea.
Escalation note
This plant is considered non-toxic. If your dog consumes a significant amount and shows signs of distress, please contact your veterinarian.
Bring it home
Bitternut Hickoryis generally pet-safe in ordinary household exposure. If you’d like one for your space, here’s a starting point.
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Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
The Bitternut is listed as non-toxic to both cats and dogs.
NC State Extension Plant Toolbox
botanical · 94% reliability
Carya cordiformis is a native deciduous tree in the Juglandaceae family.
Questions about Bitternut Hickory
Is Bitternut Hickory toxic to cats?
Bitternut Hickory (Carya cordiformis) is considered non-toxic to cats. According to an ASPCA provenance audit, this plant is classified as generally safe, with no toxic compounds expected to cause harm.
What happens if my cat eats Bitternut Hickory leaves or nuts?
No toxic symptoms are expected. If your cat consumes a significant amount of the fibrous plant material — leaves, bark, or nuts — mild vomiting or diarrhea is possible simply due to the bulk and fibrous texture, not from any toxic principle.
What should I do if my cat ate a large amount of Bitternut Hickory?
Since the plant is non-toxic, a small nibble requires no action. If your cat ate a significant quantity and is showing vomiting, diarrhea, or signs of distress, contact your veterinarian — GI upset from fibrous plant matter can occasionally need supportive care.
Are the bitter nuts of Bitternut Hickory dangerous to cats?
The bitterness of Bitternut Hickory nuts comes from tannins and compounds that make them unpalatable, but the plant is classified as non-toxic; no poisoning is expected. Large ingestion of the fibrous nut material could cause mild digestive upset, so non-toxic does not mean a large snack is harmless.
Is Bitternut Hickory toxic to dogs?
Bitternut Hickory (Carya cordiformis) is considered non-toxic to dogs. It is generally safe, though that does not mean it is beneficial for them to eat.
What happens if my dog eats Bitternut Hickory nuts or leaves?
No toxic effects are expected. However, if your dog consumes a large amount of the fibrous plant material, mild vomiting or diarrhea may occur due to the bulk and fiber content, not any toxic compound.
How much Bitternut Hickory would cause a problem for my dog?
Small nibbles are unlikely to cause any issue. Problems, if they occur at all, would stem from eating a significant quantity of fibrous material, which can upset the digestive tract — not from any toxin in the plant.
What should I do if my dog ate a lot of Bitternut Hickory?
Monitor your dog for vomiting, diarrhea, or signs of digestive discomfort. Since the plant is non-toxic, serious harm is not expected, but if your dog shows prolonged distress or ate a very large amount, contact your veterinarian for guidance.
Often compared with
Same genus
More from the Carya genus
Mockernut Hickory
Carya tomentosa
The Mockernut Hickory is a large deciduous tree native to North America, known for its dense wood and edible nuts. It is considered non-toxic to household pets, though its fibrous nature may cause minor digestive discomfort if consumed in large quantities.
Not yet rated for cats.
Not yet rated for dogs.
Pignut Hickory
Carya glabra
Pignut Hickory is a native North American hardwood tree known for its dense wood and small, pear-shaped nuts. It is generally considered safe for pets, though ingestion of large amounts of fibrous plant material may cause minor digestive discomfort.
Not yet rated for cats.
Generally safe for dogs.
Same safety verdict
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