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If your cat ate azolla filiculoides — do this now

  1. Take the plant away and clear any pieces from their mouth.
  2. Do not induce vomiting unless told to by a professional.
  3. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 now.

Azolla filiculoides is mildly toxic to cats (ASPCA).

Pet emergency

My cat ate Azolla filiculoides — what to do

Step by step

  1. Take azolla filiculoides away and remove any plant material from your cat's mouth so they cannot eat more.
  2. Note roughly how much was eaten and when — this helps the vet judge the risk.
  3. Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice.
  5. Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.

This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435.

My cat ate azolla filiculoides — FAQ

Is azolla filiculoides poisonous to cats?

Yes — the ASPCA lists Azolla filiculoides (Azolla filiculoides) as mildly toxic to cats. Azolla filiculoides is not individually listed on the ASPCA Toxic and Non-Toxic Plants database, so a pet-safety claim cannot be confirmed; treat with caution and verify with a vet. Its symbiotic cyanobacterium has largely lost the genes for classic cyanotoxins, but as a cyanobacteria-hosting floating mat it can degrade water quality, so a pet drinking from an Azolla-covered pond is the practical hazard to monitor.

How serious is it if my cat ate azolla filiculoides?

Azolla filiculoides is mildly toxic, so most cats get short-lived mouth irritation, drooling, and vomiting rather than a life-threatening reaction. It is still worth a vet call to be safe, especially if your cat ate a lot or symptoms persist.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. Azolla filiculoides is not individually listed on the ASPCA Toxic and Non-Toxic Plants database, so a pet-safety claim cannot be confirmed; treat with caution and verify with a vet. Its symbiotic cyanobacterium has largely lost the genes for classic cyanotoxins, but as a cyanobacteria-hosting floating mat it can degrade water quality, so a pet drinking from an Azolla-covered pond is the practical hazard to monitor. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my cat vomit?

No — do not induce vomiting unless a vet or the ASPCA Animal Poison Control Center specifically tells you to. The wrong action can make things worse. Call (888) 426-4435 and follow professional advice.

How do I stop this happening again?

Keep azolla filiculoides well out of reach, or swap it for an ASPCA non-toxic plant — see the best cats-safe plants list.

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