Plants / Apple / dogs

Is Apple toxic to dogs?

Apple (Malus sylvestrus, as listed by the ASPCA) is toxic to dogs (S3 Toxic): the ASPCA lists cyanogenic glycosides and says stems, leaves, and seeds contain cyanide, particularly toxic in the process of wilting, with brick red mucous membranes, dilated pupils, difficulty breathing, panting, and shock.

  • TOXINCyanogenic glycosides
  • WHAT TO EXPECTStems, leaves, seeds contain cyanide, particularly toxic in the process of wilting: brick red mucous membranes, dilated pupils, difficulty breathing, panting, shock.
  • CALL THE VETContact your vet promptly after ingestion of stems, leaves, or seeds. The ASPCA lists difficulty breathing and shock, and says the cyanide is particularly toxic in the process of wilting.
S0S1S2S3S4

Symptoms

SIGN
Stems, leaves, seeds contain cyanide, particularly toxic in the process of wilting: brick red mucous membranes, dilated pupils, difficulty breathing, panting, shock.

If your dog just ate it

S3 PROTOCOL
1
Remove Apple and any chewed stems, leaves, or seeds, and contact your vet promptly after ingestion. The ASPCA says the cyanide is particularly toxic in the process of wilting. Bring a photo or piece of the plant.
2
When to call the vet: Contact your vet promptly after ingestion of stems, leaves, or seeds. The ASPCA lists difficulty breathing and shock, and says the cyanide is particularly toxic in the process of wilting.
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Same floor look, minus the risk

3 floor plants graded S0 — non-toxic on record.

Care at a glance

Lightdirect
Waterevery 7–14 days
Humiditymedium
Difficulty●●○

FAQ

Is Apple toxic to dogs?

Yes, for Malus sylvestrus, as listed by the ASPCA: S3 Toxic. The Apple entry lists "Cyanogenic glycosides" and "Stems, leaves, seeds contain cyanide, particularly toxic in the process of wilting: brick red mucous membranes, dilated pupils, difficulty breathing, panting, shock." Contact your vet promptly after ingestion.

Which plant does this Apple verdict cover?

Malus sylvestrus, as listed by the ASPCA. The Apple entry gives that scientific name, and its Additional Common Names field reads "Includes crabapples". This verdict follows that entry. Plants with other scientific names are not covered or graded here. Check the scientific name on the tag.

Which parts does the ASPCA name?

Stems, leaves, and seeds. The clinical signs line says "Stems, leaves, seeds contain cyanide, particularly toxic in the process of wilting: brick red mucous membranes, dilated pupils, difficulty breathing, panting, shock." Contact your vet promptly after ingestion.

Is Apple toxic to cats?

Yes, for Malus sylvestrus, as listed by the ASPCA: S3 Toxic. The Apple entry lists "Cyanogenic glycosides" and "Stems, leaves, seeds contain cyanide, particularly toxic in the process of wilting: brick red mucous membranes, dilated pupils, difficulty breathing, panting, shock." Contact your vet promptly after ingestion.

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Verdapaw Plant × Pet Safety Index, verdapaw.com/plants/apple, reviewed 2026-11-01