Is Orange Toxic to Dogs and Cats? (2026)
Citrus sinensis
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Quick facts
| Toxic to dogs | Yes |
|---|---|
| Toxic to cats | Yes |
| Toxic to horses | No |
| Toxic component | Essential oils (limonene) and psoralens, concentrated in the peel and seeds |
| Onset of symptoms | Within a few hours |
| Indoor / outdoor | both |
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
- Vomiting
- Diarrhea
- Drooling
- Skin irritation or photosensitivity from peel oil on skin
Symptoms in cats
- Vomiting
- Diarrhea
- Drooling
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What to do
The peel and seeds are more concentrated in irritants than the fruit itself; usually resolves with monitoring.
Toxic component and mechanism
The toxic component in Orange is essential oils (limonene) and psoralens, concentrated in the peel and seeds.
Part-specific risk: Peeled, seedless fruit flesh in small amounts is much lower risk than peel, seeds, or leaves.
What makes this plant different
Orange peel and seeds are more concentrated in essential oils and psoralens than the fruit segments themselves — a dog eating a peeled, seedless orange slice is at meaningfully lower risk than one that gets into a whole discarded peel.
Plant identification
- Scientific name
- Citrus sinensis
- Family
- Rutaceae
- Also known as
- Orange
- Typically found
- both
Pet-safe alternatives
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Related plants
Bergamot Orange
Citrus Aurantium
Calamondin Orange
Citrus mitis
Grapefruit
Citrus paradisii
Adam-and-Eve
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American Holly
Ilex opaca
Last verified: July 2, 2026 · Cross-referenced with ASPCA Animal Poison Control