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Can Turtles Eat Avocado? Poisonous Fruit Ever?

Can Turtles Eat Avocado? Poisonous Fruit Ever?

A popular substitute for butter among vegans, avocados have become a seasoned fruit boasting several health benefits. Maybe that’s what got the Academy Award-winning actor Jamie Foxx to grow them on his farm.

Avocados possess numerous benefits for humans. They lower cholesterol, have higher potassium levels than bananas, and are rich in antioxidants. 

But what about their effect on our little reptile friends? Can turtles eat them?

Let’s find out.

Can Turtles Eat Avocado?

You should steer clear from feeding avocados to your turtles because avocados have persin, a fungicidal toxin that can cause organ failure in turtles. So although a turtle will not refrain from eating it, you shouldn’t serve them avocados. 

There have been cases of turtles becoming seriously ill after consuming avocados. 

As a pet owner, you need to know which food is safe for your pets and which isn’t. And avocado is at the top of the list of harmful foods for turtles.

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Why You Shouldn’t Feed Avocados To Turtles?

Here I have explained in brief why you shouldn’t offer avocados to your beloved turtles.

Effects Of Persin On Turtles

You may have heard about several health benefits avocados do to humans, especially the studies hinting that eating avocados cause apoptosis (programmed cell death) in patients suffering from breast cancer. But unfortunately, you cannot share the same beliefs with your turtles.

In fact, it is shocking to hear about the effect avocado has on shelled friends. 

As I mentioned earlier, avocados contain persin which has unfavorable effects on turtles.

Here are some of the expected effects of persin on turtles:

  • Difficulty breathing
  • Accumulation of fluid around the heart and lungs
  • Organ failures – liver, kidney, and heart
  • Non-rhythmic heartbeat
  • Untimely death

Along with the effects of persin, there are other reasons which should deter you from feeding avocado to your turtles.

Fat Content Is High In Avocados

A single avocado (136g) has 21 grams of fat. Yes, we are talking about a lot of fat here. 

Nowadays, obesity has become a familiar case in captive turtles. Overfeeding and lack of space for swimming cause a turtle to become obese. 

Obese turtles can suffer from heart failure, liver disease, kidney failure, tooth and gum decay, and so on.

So, it will be a wise choice to avoid giving avocados to your turtles. 

Here I have listed the nutrient content of avocado.

Nutrient Content In Avocado

A single avocado fruit of 136 grams contains:


  • Water (g): 98.4 
  • Energy (kcal): 227
  • Protein (g): 2.67
  • Total lipid/fat (g): 21
  • Carbohydrate, by difference (g): 11.8
  • Fiber (g): 9.20
  • Sugar (g): 0.41


  • Calcium (mg): 18.0
  • Iron (mg): 0.83
  • Magnesium (mg): 39.0
  • Phosphorus (mg): 73.0
  • Potassium (mg): 690
  • Sodium (mg): 11.0


  • Vitamin C (mg): 12.0
  • Vitamin B-6 (mg): 0.39
  • Vitamin A (mg): 10.0
  • Vitamin E (mg): 2.68



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Avocados Are High In Oxalates

Oxalates, also known as oxalic acid, are a natural compound found in many fruits and vegetables.

However, some fruits have higher amounts of oxalates than others. And avocado is one of them. A single avocado contains 19 mg of oxalates. 

And when turtles ingest high amounts of oxalate-rich food, the oxalates bind with calcium and prevent the absorption of necessary minerals – including calcium.

This leads to calcium deficiency in turtles. As a result, they suffer from metabolic bone disease (MBD). 

Symptoms of MBD in turtles are:

  • Swollen legs
  • Arched spine
  • Bumps along the legs, spine, and tail
  • Bilateral softening of the jaw (commonly known as rubber jaw)
  • Tremors
  • Twitching of legs while at rest
  • Fractured bones

The Calcium To Phosphorus Ratio Doesn’t Match With A Turtle’s Requirements.

A single avocado has 18 mg of calcium and 73 mg of phosphorus. And ideally, the calcium-to-phosphorus ratio required for a turtle’s diet would be 2:1. 

However, the above mineral content reveals that the ratio is nowhere near the ideal range. 

When the phosphorus content is too high relative to calcium, it forms calcium phosphate in the turtle’s gut. 

And when this happens, the turtle’s system can barely absorb the calcium required by its body. 

So, calcium deficiency in turtles doesn’t necessarily mean that the turtle is intaking less calcium. It could also mean the food your turtle consumes has more phosphorus than calcium. 

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So, What Should You Do If Your Turtle Eats An Avocado?

Sometimes we feed fruits like avocado to our turtles without understanding the dangers. And if that’s what happened in your case, you need to do the following:

Observe Your Turtle’s Behavior

Monitor how your turtle reacts after eating an avocado. Look for signs like difficulty in breathing, vomiting, restlessness, and diarrhea.

If you believe the turtle is not acting normal, you should seek medical help. But most importantly, remain calm and don’t jump to conclusions. 

If you stress out, you might end up making your turtle feel uncomfortable. 

Seek Medical Help

Call a vet immediately. Rundown a list of symptoms to your vet and inform them that you will be on your way to the clinic.

Once in the clinic, provide details like the age and size of your turtle and the amount of avocado your turtle consumed. 

The vet should be able to determine if your turtle requires any immediate medical attention. Then, he will guide you through support aid therapy if he believes you can follow his instructions.

One cannot tell if a turtle will always show symptoms after consuming an avocado.

Even after eating loads of it, there could be nothing wrong with your turtle. But you need to watch out for any unusual cues to avoid accidents.

Final Words: Can Turtles Eat Avocados

There are several reasons why you should strictly avoid giving avocados to your turtles. The primary reason is the presence of persin, a toxic element found in avocados. 


We all know how essential calcium is for our turtles. And we also need to know the risk of serving oxalate-rich food, which binds calcium and prevents turtles from absorbing it. 

Lastly, avocados have an abundance of phosphorus and fat, making them an unhealthy food choice for turtles.

I wish I could show you the reaction of my turtles after eating avocados but I don’t want to jeopardize my pet’s health for the sake of my curiosity. And you shouldn’t, too.

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