Is Apple Toxic to Dogs and Cats? (2026)
Malus sylvestrus
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Quick facts
| Toxic to dogs | Yes |
|---|---|
| Toxic to cats | Yes |
| Toxic to horses | Yes |
| Toxic component | Cyanogenic glycosides (amygdalin), concentrated in seeds/pits and wilting leaves |
| Onset of symptoms | Within an hour for large ingestions of pits/wilted leaves |
| Indoor / outdoor | outdoor |
If your pet ate this plant
Both lines are staffed 24/7. A consultation fee applies to each. Do not wait for symptoms to appear before calling.
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Symptoms in dogs
- Difficulty breathing
- Dilated pupils
- Bright red gums
- Vomiting
- Seizures with large ingestion
Symptoms in cats
- Difficulty breathing
- Dilated pupils
- Vomiting
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What to do
The flesh of the fruit is not a concern in small amounts; contact a vet if pits were chewed/cracked open or if a dog has been chewing on wilting/damaged branches, since wilted leaves release more cyanide than fresh ones.
Toxic component and mechanism
The toxic component in Apple is cyanogenic glycosides (amygdalin), concentrated in seeds/pits and wilting leaves.
Part-specific risk: Ripe fruit flesh is safe in moderation; the danger is concentrated in seeds/pits and wilting foliage.
What makes this plant different
Apple flesh and skin are entirely safe — the risk is specifically the seeds, which contain cyanogenic compounds, and only becomes relevant if a dog chews and swallows a large quantity of core material rather than an occasional accidentally-swallowed seed.
Plant identification
- Scientific name
- Malus sylvestrus
- Family
- Rosaceae
- Also known as
- Apple, Includes crabapples
- Typically found
- outdoor
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Last verified: July 2, 2026 · Cross-referenced with ASPCA Animal Poison Control