Is Aloe Vera Toxic to Cats? Signs, Risks and What to Do

By Tailwisp Editorial TeamUpdated October 20, 20264 min read

Aloe vera has a reputation as a soothing, harmless plant, so it surprises many people to learn that it is on the toxic plant lists for cats. The plant is not the most dangerous one in your home, but it is a good example of why "natural" does not always mean "safe for pets." Here is what aloe does to a cat, what to look for and how to decide whether to worry.

Why aloe is a problem for cats

Aloe leaves contain two groups of compounds that matter for cats. Saponins are soap-like chemicals that irritate the lining of the stomach and intestines. Anthraquinones, found mostly in the yellow latex just beneath the leaf skin, act as strong laxatives. The clear inner gel contains less of these compounds, but cut leaves can easily expose the latex, and cats rarely eat only the gel.

Cats are also less efficient than many species at processing certain plant compounds, so even small amounts can cause trouble. The result is usually a digestive upset, but individual cats vary, and a small kitten or a cat with kidney disease can become dehydrated faster.

Signs of aloe poisoning

Symptoms typically begin within a few hours of chewing the plant:

• Vomiting
• Diarrhea, sometimes watery
• Drooling or lip smacking
• Loss of appetite
• Lethargy or hiding
• Tremors in rare, severe cases
• Changes in urine color, which can happen with some anthraquinones

Mild cases may resolve in a day. Repeated vomiting or diarrhea is more serious because it leads to dehydration, and cats can become dehydrated quickly.

What to do if your cat ate aloe

1. Remove any plant material from your cat's mouth and take the plant away.
2. Look at the damage. Note how much seems to be missing and when it happened.
3. Offer fresh water but do not force it.
4. Call your veterinarian or a poison helpline, especially if your cat is a kitten, is vomiting repeatedly, seems weak or has any other health condition. In the US, our vet directory can help you find emergency care by state.
5. Do not induce vomiting or give milk, oil or home remedies unless instructed.

A veterinarian may recommend monitoring at home, anti-nausea medication, fluids or a hospital stay depending on the severity. Most cats recover fully with timely care.

Aloe gel on cats: should you use it?

Pet owners sometimes use aloe gel for hot spots, minor burns or dry skin. The problem is grooming. Anything you put on a cat's fur usually ends up in its stomach within minutes. Even a small amount of gel with preservatives, alcohol or added fragrance can irritate the digestive tract, and some products contain ingredients that are dangerous on their own.

If your cat has a skin problem, it is safer to treat the cause. Persistent itching, hair loss or sores often point to allergies, parasites or infection, and a vet can recommend something that is both effective and safe to lick. Our guide to cat grooming and hygiene covers routine coat care, and the skin and coat section of our cat health library covers when a problem needs a vet.

Aloe versus other houseplants

Aloe sits in the middle of the toxicity range. It is more irritating than a safe plant such as a spider plant, but far less dangerous than a true lily or a sago palm. That makes it a plant worth positioning thoughtfully rather than banishing, if your cat is not a chewer. If your cat is a determined nibbler, aloe is better off in a room the cat cannot enter.

Other succulents that cause problems include jade plant and kalanchoe. Safer succulent choices include Haworthia and Echeveria. Our guide to cat-safe houseplants lists more options, and the article on toxic houseplants explains which plants need the most caution.

Is it really aloe vera?

Several succulents are sold as "aloe" or look similar, including Aloe aristata and various hybrids, and all of them belong to the same plant family with similar saponin content. Agave and some yucca species look alike too and are also toxic to cats. If you are unsure which plant your cat chewed, a photo of the whole plant and a leaf cross section helps a vet or poison specialist decide how worried to be.

When to call a vet straight away

Call immediately if your cat is a kitten, is elderly, has kidney or liver disease, has vomited more than once or twice, has bloody diarrhea, seems weak or wobbly, or has eaten a large amount. Also call if you cannot tell how much was eaten. A short phone call costs far less than a delayed emergency, and the person on the line can tell you whether home monitoring is reasonable.

Preventing future chewing

• Move aloe to a high, closed-off shelf or another room.
• Offer cat grass, which satisfies the urge to chew greens.
• Increase play and enrichment so the plant is not the most interesting thing in the room.
• Use deterrents on pot rims only if the plant is safe and the deterrent is cat-safe.

You can also look up other plants and foods with our free cat food and plant safety checker. If your cat ever eats something that you are worried about, call your vet or a poison helpline and have the plant name ready.