Is Sweet Pea Toxic to Dogs?

☠️ ToxicSeverity: Moderate

✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit

⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.

Yes, sweet pea is toxic to dogs. Seeds and seedlings carry lathyrogenic compounds that cause digestive upset at once and nerve damage with repeated intake.

Also known as: Annual Sweet Pea, Perfumed Pea, Lathyrus odoratus · Lathyrus odoratus

What makes it toxic

Beta-aminopropionitrile and ODAP, amino-acid toxins concentrated in seeds and young growth. They disrupt connective tissue repair and nerve signaling, so chronic ingestion is the most dangerous pattern.

Warning signs to watch for

Vomiting, diarrhea and drooling after eating; with ongoing intake, trembling, hind-end weakness, a stiff stilted gait and reluctance to move.

What to do if your dog eats it

Call your vet after any confirmed ingestion, urgently if pods or seedlings were eaten. Stumbling or trembling means immediate veterinary care.

Common questions

My dog ate sweet pea pods from the compost — now what?

Pods are seed-rich and the most toxic part. Call the vet right away rather than waiting for symptoms.

Are everlasting peas also toxic?

Yes — perennial sweet pea (Lathyrus latifolius) shares the same toxins, so the whole Lathyrus genus stays out of pet areas.

Can sweet pea poisoning be treated?

Early cases recover with decontamination and supportive care; chronic nerve damage improves only slowly. That asymmetry is why fast action matters.

More plants checked for dogs

Pothos☠️ ToxicYes, pothos is toxic to dogs. Chewing any part of the vine releases calcium oxalate crystals tha Aloe Vera⚠️ Mildly ToxicAloe vera is mildly to moderately toxic to dogs. The skin and latex layer of the leaf contain co Spider Plant✅ Non-ToxicNo, spider plants are non-toxic to dogs. A dog that nibbles the arching leaves is not at risk of Easter Lily⚠️ Mildly ToxicEaster lilies are only mildly toxic to dogs — they usually cause stomach upset, not the fatal ki Sago Palm☠️ ToxicYes — sago palm is severely toxic to dogs, with a documented fatality rate around 50% when untre Boston Fern✅ Non-ToxicNo, Boston ferns are non-toxic to dogs. Chewing a frond will not poison your dog.

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.