Is Aloe Vera Toxic to Cats and Dogs?
Yes, the common aloe vera plant is toxic to cats and dogs. The American Society for the Prevention of Cruelty to Animals (ASPCA) lists Aloe vera as a toxic plant for both species. While many people keep this popular succulent in their homes, pet owners should understand which parts of the plant are harmful.
The toxicity comes from compounds found within the leaves, not from the clear gel inside. The gel itself is considered edible. The danger to pets lies in their chewing on or ingesting the green leaf material that surrounds the inner gel. This part of the plant contains substances that can cause gastrointestinal upset.
Aloe Vera: what the ASPCA database lists
| ASPCA entry | Aloe |
|---|---|
| Other common names | None listed |
| Scientific name | Aloe vera |
| Family | Liliaceae |
| Toxic to | Toxic to Dogs, Toxic to Cats, Toxic to Horses |
| Non-toxic to | None listed |
| Toxic principles | Saponins, anthraquinones |
| Clinical signs listed | Vomiting (not horses), lethargy, diarrhea. The gel is considered edible. |
ASPCA information on aloe vera
The ASPCA identifies the toxic principles in aloe vera as saponins and anthraquinones. These natural compounds are contained in the green leaf portion of the plant. If a cat or dog eats this material, it can lead to a few distinct clinical signs. The organization lists the following symptoms of aloe vera poisoning:
- Vomiting
- Lethargy
- Diarrhea
These signs reflect the plant’s effect on the digestive system. The severity of the symptoms can depend on how much of the plant a pet consumes. The ASPCA’s database covers a wide range of plants and is a primary resource for pet toxicity information.
What this means for pets at home
Having an aloe vera plant in a home with pets requires careful management. A curious cat or a bored dog might be tempted to chew on the plant’s leaves. Because the toxic compounds are in the leaf itself, any amount chewed or swallowed poses a risk. It is the green leaf material, not the central gel, that is the source of the problem.
Many consumer products contain aloe vera gel. It is always important to read the full ingredient list of any product before giving it to a pet, as some may contain other ingredients that are not safe for animals. The safety of a processed product is different from the safety of the raw plant. A pet eating the houseplant directly is consuming the parts that are known to be toxic.
Keeping pets and this plant separate
The most reliable way to prevent aloe vera poisoning is to keep the plant out of your pet’s reach. Place it on a high shelf, in a room that pets cannot access, or inside a hanging planter they cannot get to. Some pets are persistent, so supervision is key. Check the plant regularly for any signs of chewing, such as bite marks or broken leaves.
If you bring a new plant into your home, supervise your cat or dog closely during the introduction period. Pets often explore new items with their mouths. If you notice your pet showing interest in the plant, redirect their attention with a toy or an appropriate chew. This helps teach them that the plant is not something to play with or eat.
When to call your vet
If your pet chewed or ate part of this plant, call your veterinarian or an animal poison control line. Note which plant and which part, how much may be gone and when, and take a photo or a piece of the plant with you.
If you suspect your cat or dog has eaten any part of an aloe vera plant, contact your veterinarian or the ASPCA Animal Poison Control Center immediately. Be prepared to tell them what part of the plant your pet ate, how much you think they consumed, and when it happened. Do not attempt to treat your pet at home.
Emergency signs: go now
- Collapse, fainting or severe weakness
- Seizures, tremors or trouble standing
- Trouble breathing or blue, gray or very pale gums
- Repeated vomiting or retching, or a swollen, painful belly
- Any known contact with a substance listed as toxic, even before signs appear
Book an appointment soon
- Vomiting or diarrhea that lasts or keeps coming back
- Not eating or drinking, or drinking much more than usual
- Drooling, pawing at the mouth or a swollen face
- Lethargy, hiding or acting unlike themselves
ASPCA Animal Poison Control Center: (888) 426-4435 (a consultation fee may apply). Your own vet or nearest emergency clinic is always a good first call.
Sources
Last checked October 21, 2026. Listings and guidance can change; your veterinarian knows your pet’s health history.