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Is Red Tropea Onion toxic to dogs?

Allium cepa 'Tropea'

Toxic to dogs

Yes — red tropea onion is toxic to dogs according to the ASPCA. Keep it well away from any dog that chews plants; reactions can be significant. This classification follows the ASPCA Toxic and Non-Toxic Plant List. The ASPCA classifies onion (Allium) as toxic to cats and dogs. Thiosulphates and disulphides in all parts cause oxidative damage to red blood cells and haemolytic anaemia; signs include vomiting, weakness, pale gums and red-tinged urine. Cats are particularly vulnerable. Keep bulbs and trimmings out of reach.

What to do if your dog ate red tropea onion

  1. Remove any plant material from your dog's mouth and move red tropea onion out of reach.
  2. Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
  3. Do not induce vomiting unless a vet or poison-control specialist instructs you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
  5. Bring a leaf or photo of red tropea onion to the appointment so it can be treated correctly.

General guidance, not veterinary advice. If you think your dog has eaten red tropea onion, contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.

Is red tropea onion toxic to dogs? — FAQ

Is red tropea onion toxic to dogs?

Yes — red tropea onion is toxic to dogs according to the ASPCA. Keep it well away from any dog that chews plants; reactions can be significant. The ASPCA classifies onion (Allium) as toxic to cats and dogs. Thiosulphates and disulphides in all parts cause oxidative damage to red blood cells and haemolytic anaemia; signs include vomiting, weakness, pale gums and red-tinged urine. Cats are particularly vulnerable. Keep bulbs and trimmings out of reach.

What are the symptoms if a dog eats red tropea onion?

The ASPCA classifies onion (Allium) as toxic to cats and dogs. Thiosulphates and disulphides in all parts cause oxidative damage to red blood cells and haemolytic anaemia; signs include vomiting, weakness, pale gums and red-tinged urine. Cats are particularly vulnerable. Keep bulbs and trimmings out of reach. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your dog has had access to red tropea onion.

What should I do if my dog ate red tropea onion?

Stay calm. Remove any plant from your dog's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

Is red tropea onion toxic to cats too?

The ASPCA classification Growli uses applies to both cats and dogs: Red Tropea Onion is toxic to cats as well. See the full red tropea onion pet-safety guide for both species.

What is a dog-safe alternative to red tropea onion?

For a similar look without the risk, see the best dogs-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.

Full red tropea onion pet-safety