Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My cat ate Aloe Vera - what should I do?
Aloe vera
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Signs to watch for
Vomiting, lethargy, diarrhea, tremors and change in urine color from anthraquinone latex under the leaf skin.
Escalation note
Gel interior is much less risky than the whole leaf. Treat chewed whole leaves as a veterinary concern.
Source references
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.