Aloe barbadensis miller
Why is it risky?
Aloe vera contains saponins and anthraquinones (specifically aloin), found primarily in the latex layer beneath the skin of the leaves. These compounds irritate the gastrointestinal tract and act as a laxative. While the gel inside the leaf is considered low-risk, the whole plant should be treated as toxic since cats typically ingest both parts when chewing.
Affected Systems
Digestive · Kidneys
Symptoms
Vomiting, diarrhea, lethargy, loss of appetite, tremors, change in urine colour (reddish or dark).
What To Do
If your cat has chewed or ingested aloe vera, contact your veterinarian. Take note of how much was consumed. Most cases resolve with supportive care, but persistent vomiting or changes in urine colour require prompt attention.
Notes
Aloe vera is widely used in cosmetic and medicinal products for humans, which leads many owners to assume it is safe for cats. It is not. Keep plants elevated and out of reach. Aloe-based products applied to human skin are generally not a concern unless the cat licks large quantities.
Sources
→ ASPCA Animal Poison Control — https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/aloe
→ International Cat Care