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.
Pet safety reference
Sweetheart Hoya
Hoya kerrii
The Sweetheart Hoya is a popular succulent vine known for its distinctive heart-shaped leaves, often sold as a single-leaf cutting. It is considered non-toxic to pets, though its fibrous nature may cause mild digestive discomfort if consumed in large quantities.
Hoya kerriiLucky HeartSweetheart HoyaValentine Hoya
- Light
- Bright indirect light
- Habit
- Vining
- 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. In rare cases of large ingestion, mild vomiting or diarrhea may occur due to the fibrous texture of the leaves.
Escalation note
This plant is non-toxic. If your cat consumes a significant amount and shows signs of distress, contact your veterinarian to rule out physical obstruction or irritation.
Dogs — concern notes
Common signs
None expected. Large ingestions may lead to minor gastrointestinal upset, such as vomiting or diarrhea, caused by the plant's fibrous material.
Escalation note
This plant is non-toxic. If your dog consumes a large amount and exhibits persistent vomiting or lethargy, consult your veterinarian.
Bring it home
Sweetheart Hoyais 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 and Non-Toxic Plants List
toxicology · 99% reliability
Sweetheart Hoya (Hoya kerrii) is listed as non-toxic to cats and dogs.
NC State Extension Plant Toolbox: Hoya kerrii
botanical · 94% reliability
Hoya kerrii is a slow-growing succulent vine in the Apocynaceae family, commonly grown as a houseplant.
Questions about Sweetheart Hoya
Is Sweetheart Hoya toxic to cats?
No, Sweetheart Hoya (Hoya kerrii) is non-toxic to cats. It is considered generally safe, and no toxic compounds are documented for this plant.
What happens if my cat eats a Sweetheart Hoya leaf?
In most cases, nothing serious. In rare instances of large ingestion, the fibrous texture of the leaves may cause mild vomiting or diarrhea, but no toxic reaction is expected.
What should I do if my cat ate a lot of Sweetheart Hoya?
Monitor your cat for signs of GI upset such as vomiting or diarrhea. Non-toxic does not mean harmless in large quantities — if your cat ate a significant amount and seems distressed, contact your veterinarian to rule out physical irritation or obstruction.
Can a single-leaf Sweetheart Hoya cutting harm my cat?
No, the single-leaf cuttings commonly sold around Valentine's Day are the same non-toxic plant. A nibble is very unlikely to cause any reaction, though a large amount of fibrous leaf material could cause mild digestive upset.
Is Sweetheart Hoya toxic to dogs?
No, Sweetheart Hoya (Hoya kerrii) is non-toxic to dogs. It is considered generally safe, and no toxic principles have been documented for this plant.
What happens if my dog eats a Sweetheart Hoya leaf?
Most dogs will have no reaction at all. If your dog eats a large amount, the plant's fibrous material may cause minor gastrointestinal upset such as vomiting or diarrhea, but serious symptoms are not expected.
Should I be worried if my dog chewed on my Hoya kerrii plant?
A small amount is very unlikely to cause any problem. Monitor your dog for persistent vomiting, diarrhea, or lethargy — if any of these continue or worsen after a large ingestion, contact your veterinarian.
Does the heart-shaped single-leaf Hoya sold at stores pose any danger to dogs?
No — the single-leaf cutting form of Sweetheart Hoya sold as a novelty plant is the same non-toxic species and carries the same low risk. Non-toxic does not mean it's good for dogs to eat, and a large quantity of fibrous plant material can still cause mild stomach upset.
Same genus
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Hoya
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Not yet rated for cats.
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