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Avocado: A Versatile Fruit With Healthy Fats and Antioxidants

Avocados have a reputation for being poisonous to both dogs and cats, but are they really? While the fruit does contain persin, a toxin that can cause health complications, avocados may be an appropriate, beneficial treat for dogs if you're careful to avoid these common mistakes.

are avocados good for your pets?


  • Feeding your pets avocado may actually benefit their health, as long as they eat only the flesh of the fruit. Serving avocado as treats or as an addition to their nutritionally adequate, species-appropriate diet can be good for your pet
  • Avocados contain plenty of healthy fats, with 2.75 grams in every two-tablespoon serving. They also contain antioxidants, particularly lutein and zeaxanthin, which are crucial for optimal eyesight
  • Avocados' reputation for being poisonous for pets is due to a toxin named persin. However, it's the seed, skin and leaves that contain high amounts of persin. The flesh only contains very minimal amounts that shouldn't be a cause for concern

Avocados are one of the trendiest fruits these days. More  and more studies are coming out showing that they can benefit human health.1,2 But what about your four-legged pal? Can they benefit from avocados, too? It  turns out, they can — and you shouldn't be worried about the claims that these  fruits are "poisonous" to pets, with some caveats.

What's more, the majority of avocados sold in the supermarket  are free from pesticides, according to a report from the Environmental Working Group (EWG). In fact, avocados are at the top of EWG's "Clean Fifteen" list for  2020.3 However, it's still better to purchase organic avocados from certified producers whenever possible. This will help lower your and your pet's exposure  to agricultural chemicals whenever avocados are consumed.

avocado fun fact

Avocado Fun Fact


The Hass avocado is one of the most popular varieties sold around the world, but it originally came about by coincidence. According to Smithsonian Magazine, Rudolph Hass took home some seedlings to graft with other avocado varieties.

One seedling didn't mesh well with his grafts, so he left it to grow on its own. After some time, Rudolph's children noticed that the tree produced "a rich, nutty slightly oily taste." Surprisingly, this variety tasted better than his other experiments — and the Hass avocado was born.4

The Ace Up Avocado's Sleeve: Healthy Fats

Avocado contains plenty of healthy fats, with 2.75  grams in every two-tablespoon serving.5 One of the most notable benefits of this  fruit is helping boost the bioavailability of fat-soluble vitamins (A, D, E and  K) found in other foods.6,7 Avocados may also benefit your pet's gut bacteria.8

According to research published in Agronomia Colombiana,  around 70% of the total fat found in a Hass avocado is oleic acid, a type of monounsaturated  fatty acid.9 Numerous studies have been conducted regarding the potential of oleic acid for  improving well-being and the results are promising.

In one study, researchers experimented on the possible  effects of oleic acid in test rats for 14 days. By the end of the study, they  noted that oleic acid had hypotensive effects that helped lower blood pressure.  Moreover, stability in blood pressure was observed to last for around three to  four days.10 Another study found that oleic acid had neuroprotective effects in rats.  Researchers attributed this effect to the fatty acid's anti-inflammatory  properties.11

Avocados Can Also Give Your Pet Antioxidants

Avocados contain antioxidants, particularly lutein and  zeaxanthin, which are crucial for optimal eyesight.12 Research has shown that both lutein and zeaxanthin are concentrated in the retina  and their importance for eye health cannot be ignored, as noted in this study  in the Journal of Ophthalmology:13

"In these animal models,  lutein and zeaxanthin have been reported to have beneficial effects in  protecting ocular tissues and cells (especially the retinal neurons) against  damage caused by different etiological factors. The mechanisms responsible for  these effects of lutein and zeaxanthin include prevention of phototoxic damage  by absorption of blue light, reduction of oxidative stress through antioxidant  activity and free radical scavenging, and their anti-inflammatory and  antiangiogenic properties."

The Phytochemicals in Avocado Can Be a Boon to Pets

When it comes to nutrition, people normally look at the vitamins  and minerals, however, there's a second tier of substances called phytochemicals that can also contribute to wellness. Examples of phytochemicals  include phenolic acids and flavonoids.14

In the case of avocado, it is inherently rich in  carotenoids,15 which are pigments that contribute to a plant's particular color.16 Carotenoids such as lutein and zeaxanthin, which have already been discussed,  fall under this category. If you want to make the most out of the carotenoids  in your avocado, the dark green flesh closest to the peel contains the highest  amounts — just make sure you do not mix any pieces of the peel itself when you  share it with your pet.17

Avocado also contains moderate amounts of phenolics and generous amounts of phytosterols that can contribute to your pet's well-being.18 Research has shown that fruit phenolics may help lower the risk of cardiovascular  disease by improving blood flow, platelet function and blood pressure.19

On the other hand, phytosterols are biologically active  substances that have a similar structure to cholesterol.20 According to a study published in Frontiers in Pharmacology, phytosterols have  been shown to possess "chemopreventive, anti-inflammatory, antioxidant,  antidiabetic and antiatherosclerotic" properties.21

Other Beneficial Nutrients in Avocados

Aside from healthy fats, a two-tablespoon serving of avocado  also offers 1.25 grams of dietary fiber. Other vitamins and minerals found in this fruit are:22

  • Magnesium (5.43 milligrams) — It acts as a cofactor for various cellular enzymes  needed in energy metabolism.
  • Potassium (91 milligrams) — Did you know that avocados contain more potassium than  bananas? In humans, potassium is known for promoting healthy blood pressure  levels.
  • Vitamin C (1.8 milligrams) — This acts an as antioxidant that helps scavenge harmful  free radicals, reduce inflammation and slow down cognitive aging.23
  • Vitamin E (0.38 milligrams) — This fat-soluble vitamin is essential for protecting  your dog against oxidative damage, as well as for promoting cellular function  and fat metabolism.24
did you know?

Did You Know?


The Hass avocado wasn't always the most popular variety. Back in the 1950s, that recognition belonged to the Fuerte avocado, which accounted for two-thirds of total production in California. As time went on, the Hass variety surpassed the Fuerte to become the top choice for large-scale cultivation.33

Where Did the Myth About Avocado's Toxicity Come From?

Avocado has a reputation for being poisonous to dogs, a  belief that some organizations, such as the American Kennel Club, agree with.25 Misinformation  about many healthy fruits, vegetables, nuts and seeds abounds on the internet.  This is because websites have labeled all risks (such as the risk of  over-consumption causing gastrointestinal issues, or choking on too large of  pieces or pits) as "toxicities," which isn't true, but has managed to confuse  millions of pet lovers, nonetheless.

Avocados are not bad for dogs. In fact, it's the opposite — serving them as  treats or as an addition to their nutritionally adequate, species-appropriate  diet can benefit your dog's health. A 2012 study finally debunked the idea that  they are bad, after showing that beagles fed avocado extract did not have any  adverse health effects.26

So where did the myth about avocados being bad for your dog  begin? This belief may have originated from a 1994 study published  in The Onderstepoort Journal of Veterinary Research titled "Putative Avocado Toxicity in Two Dogs."27 Note that putative means "supposed,"28 which means that avocados may cause health complications but there is also a  chance that they may not.

Avocados contains persin, a poisonous substance found in all  parts of the plant (skin, stems and leaves), and this could actually be a good thing,  because there's research showing that small amounts of persin may eliminate  cancer cells.29

Going back to the study mentioned earlier — the dogs  wandered into an avocado orchard and proceeded to eat the plants (not the  fruit) because they were starving. Note that their stomach contents weren't  analyzed. The researchers only provided a visual comparison to 15 goats that displayed similar symptoms before dying. It's surmised the goats primarily consumed  avocado leaves, which are very high in persin.

This study contributed to the reputation that avocados are  bad for dogs, a myth that is thankfully resolving due to the benefits dog owners are seeing by feeding avocado oil and the flesh of the fruit to their  animals. Later in this article I will share with you tips on how to prepare  avocado for your pets to keep them safe.

Where Do Avocados Grow?


Avocados are said to have originated from Mexico, and in Northern and Central America. In the U.S., 90% of avocados come from California.30,31


Should You Be Worried About Feeding Avocados to Your Cats?

While there's a study published in Interdisciplinary  Toxicology that says avocados should not be fed to cats due to the possibility  of persin ingestion,32 there's  not enough evidence to fully support this claim.

There's also a study that notes that of 1,616 phone calls made  to the Kansas State Veterinary  Diagnostic Laboratory over a period of three years, avocados comprised  4.1% of all the plant-based toxic substances reported.33 But the main problem with this study is that the pet owners didn't specify what  part of the avocado was eaten, so it's possible the cats consumed other parts  of the avocado plant aside from the flesh.

There are many people who feed small amounts of avocado  fruit to their dogs and cats. In higher amounts, the natural fats found in this  fruit may upset your pet's stomach, so offering only tiny pieces is recommended. Most cats, being carnivores, will not choose to eat this fruit.

The Way You Feed Avocados to Your Pet Is Key

"When feeding avocados to your pet, only give them the fleshy part (the same part you eat), and in small quantities at a time."

Take care to remove the skin and the pit to ensure that  you're not inadvertently poisoning your dog with the high amounts of persin in those parts of the avocado.34

The quality of the avocado is also important. Try purchasing  organic avocados from certified producers whenever possible. While avocados belong to EWG's Clean Fifteen list, organically grown varieties can help lower  your pet's exposure to chemicals compared to conventionally grown ones, even if  they're "clean."

Exercise Caution With Avocado Stems, Leaves and Pits

While there may not be sufficient evidence to concretely  prove that avocados are bad for your pets, this doesn't mean you should stuff  them with the fruit every day — you still need to practice common sense. You can feed them avocado, but you also need to exercise caution with the stems,  leaves and pits, which contain the highest levels of persin. If you have avocado plants growing  in your garden, make sure your pets do not ingest the stems, leaves or the tree  bark (though this is very unlikely to happen).

On the off chance that your pet consumes the inedible parts  of the fruit, you need to be aware of the signs of persin toxicity so that you can get your pet help right away:34

  • Vomiting
  • Diarrhea
  • Respiratory distress
  • Congestion

It's also important to remember that whether avocados are given  only as treats or as a part of their nutritionally adequate, species-appropriate diet, they should be given in moderation. Treats should  comprise less than 10% of your pet's daily caloric intake. If you feed your pet  homemade meals, make sure you follow a recipe that's been formulated to meet  your pet's minimum nutrient requirements.

Work with your integrative veterinarian to compute your  pet's total daily calorie intake to decide how you can incorporate avocados into it. With the correct serving size, avocados can be a scrumptious, refreshing  treat for your four-legged friend. For more information on this topic, you can  read my article "Is  Avocado Safe for Dogs?"

Sources and References

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