Is Orange Toxic to Dogs and Cats? (2026)

Citrus sinensis

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Mild
Mild
Safe

Quick facts

Toxic to dogsYes
Toxic to catsYes
Toxic to horsesNo
Toxic componentEssential oils (limonene) and psoralens, concentrated in the peel and seeds
Onset of symptomsWithin a few hours
Indoor / outdoorboth

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

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The information on this page is for general informational purposes only and is not a substitute for professional veterinary advice. Plant toxicity data is sourced from the ASPCA Toxic and Non-Toxic Plants database. If you believe your pet has ingested a toxic plant, contact your veterinarian or the ASPCA Animal Poison Control Center (888-426-4435) immediately. Do not wait for symptoms to appear.

Last verified: July 2, 2026 · Cross-referenced with ASPCA Animal Poison Control