Aloe vera
Short answer: Aloe vera is toxic to dogs and cats. Its saponins and anthraquinones can cause vomiting, diarrhea and lethargy. The ASPCA notes the gel itself is considered edible.
Toxic principle: Saponins and anthraquinones.
The ASPCA lists aloe as toxic to dogs, cats and horses. The gel is considered edible; the problem is the rest of the plant.
Our sources don’t cover topical use. Ask your vet before using any human product on your pet, since pets may lick it off.
Last checked: 2026-11-11. General information, not veterinary advice.