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Is Myriophyllum aquaticum toxic to cats?

Myriophyllum aquaticum

Mildly toxic to cats

Mildly. The ASPCA lists myriophyllum aquaticum as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List. Myriophyllum aquaticum is not individually listed in the ASPCA toxic/non-toxic plant database, so its pet status is not formally established; treat with caution and verify with a vet. It is sold as an aquarium and pond oxygenator without a known severe toxicity, but it carries no formal ASPCA non-toxic rating and should not be assumed pet-safe.

What to do if your cat ate myriophyllum aquaticum

  1. Remove any plant material from your cat's mouth and move myriophyllum aquaticum 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 myriophyllum aquaticum to the appointment so it can be treated correctly.

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

Is myriophyllum aquaticum toxic to cats? — FAQ

Is myriophyllum aquaticum toxic to cats?

Mildly. The ASPCA lists myriophyllum aquaticum as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Myriophyllum aquaticum is not individually listed in the ASPCA toxic/non-toxic plant database, so its pet status is not formally established; treat with caution and verify with a vet. It is sold as an aquarium and pond oxygenator without a known severe toxicity, but it carries no formal ASPCA non-toxic rating and should not be assumed pet-safe.

What are the symptoms if a cat eats myriophyllum aquaticum?

Myriophyllum aquaticum is not individually listed in the ASPCA toxic/non-toxic plant database, so its pet status is not formally established; treat with caution and verify with a vet. It is sold as an aquarium and pond oxygenator without a known severe toxicity, but it carries no formal ASPCA non-toxic rating and should not be assumed pet-safe. 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 cat has had access to myriophyllum aquaticum.

What should I do if my cat ate myriophyllum aquaticum?

Stay calm. Remove any plant from your cat'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 myriophyllum aquaticum toxic to dogs too?

The ASPCA classification Growli uses applies to both cats and dogs: Myriophyllum aquaticum is mildly toxic to dogs as well. See the full myriophyllum aquaticum pet-safety guide for both species.

What is a cat-safe alternative to myriophyllum aquaticum?

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

Full myriophyllum aquaticum pet-safety