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Is aloe vera toxic to cats?

Also called: aloe, Aloe barbadensis, true aloe, Barbados aloe

Toxic

The sap can cause vomiting and diarrhoea. More serious signs are unlikely.

Yes. The white sap in aloe leaves can make cats vomit and cause diarrhoea and tiredness. The clear gel inside the leaf is not considered toxic.

Signs to watch for

  • Vomiting, diarrhoea and lethargy.

Why it's dangerous

  • The white sap contains compounds that make animals vomit.

Sources

  • Toxic and Non-toxic Plants: AloeASPCA Animal Poison Control · Read 9 October 2026
    Clinical Signs: Vomiting (not horses), lethargy, diarrhea. The gel is considered edible.
  • Plants That are Toxic to CatsVCA Animal Hospitals · Read 9 October 2026
    The gel inside the aloe leaf is not toxic, but the white sap contains compounds that are strong emetics (they induce vomiting).
  • Top 11 Poisonous PlantsPet Poison Helpline · Read 9 October 2026
    The sap from aloe plants can result in intense diarrhea and vomiting.
    It is unlikely for more severe signs to occur.

Information from ASPCA Animal Poison Control, VCA Animal Hospitals and Pet Poison HelplineSources checked 9 October 2026

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