Is Blue-green algae Toxic to Cats?
Yes — blue-green algae is toxic to cats.
PawSafe Check is for general information only and is not veterinary advice. Always contact your veterinarian or a poison control service if you think your pet has been exposed.
Symptoms to watch for
- Vomiting
- Diarrhea
- Weakness
- Tremors
- Seizures
- Trouble breathing
Toxic parts
Contaminated water
Toxic compound
Microcystins, anatoxins
What to do now
- Call your vet or a pet poison control line immediately — don't wait for symptoms.
- Do not induce vomiting unless a vet tells you to.
- Bring the plant, label or packaging with you so the vet knows exactly what your cat ate.
- Note roughly how much was eaten and when.
Good to know
Toxic algae blooms in ponds and lakes can kill dogs within hours of swimming or drinking. Avoid scummy, green or blue water.
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Frequently asked questions
Is blue-green algae toxic to cats?
Yes — blue-green algae is toxic to cats. Toxic algae blooms in ponds and lakes can kill dogs within hours of swimming or drinking. Avoid scummy, green or blue water.
What are the symptoms of blue-green algae poisoning in cats?
Vomiting. Diarrhea. Weakness. Tremors. Seizures. Trouble breathing.
What should I do if my cat ate blue-green algae?
Call your vet or a pet poison control line immediately — don't wait for symptoms. Do not induce vomiting unless a vet tells you to. Bring the plant, label or packaging with you so the vet knows exactly what your cat ate. Note roughly how much was eaten and when.
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