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Is Your Chameleon Too Skinny? Symptoms, Causes, Treatment

is my chameleon skinny?

Chameleons aren’t the chubbiest of creatures to begin with. However, there are certainly times when a chameleon becomes too skinny and noticeably unhealthy, and recognizing its signs early enough can help prevent serious issues. 

Your chameleon might be underweight if it has a sunken casque, a very prominent pelvic girdle, and boney limbs and tail. Common reasons for this include deficiencies, infections, and stress, most of which can be treated and prevented by a nutrient-rich diet and well-maintained housing.

This post will go into detail about how to distinguish underweight chameleons from healthy ones, the possible reasons behind them becoming skinny, and what you can do to prevent and treat the issue. Read on! 

Signs of Healthy vs Underweight Chameleons 

Being the naturally lean creatures that they are, it can be hard to distinguish between healthy chameleons and alarmingly skinny ones.

But with careful examination of its body traits, you can determine if your chameleon has become way too skinny than what’s considered normal. Here are some ways you can assess this:

Shape of the Pelvic Girdle 

Chameleons store most of their fat near the hips, so naturally, well-fed ones will have slightly rounded hips.

However, if the pelvic girdle is way too obvious, and the bones from within can be seen protruding, your chameleon is likely underweight.

Shape of the Casque and Cheeks

is my chameleon too thin?
This is what the head of a healthy chameleon with normal weight should look like.

The second place where chameleons store fat is within their casque – the protruding bone at the top of their heads.

You want your chameleon’s casque to be lean and slightly padded (but not swelled up, because that could pinpoint towards obesity). 

However, if the casque is very boney and sunken in appearance, then your chameleon could be too skinny for its own good.

The same goes for their cheeks – if they’re slightly rounded, your chameleon is doing fine, but if they’re sunken in, then it’s a cause for concern.

Shape of the Belly 

When relaxed, your chameleon should have a rounded belly. A constantly flat abdomen and belly could mean your lizard doesn’t have enough fat on its body.

Note: chameleons tend to flatten their bodies when they feel threatened or have to expand their surface area to thermoregulate. So it’s best to observe the shape of their bellies when they’re relaxed or sleeping.

The first chameleon in this video definitely looks a bit skinny. The second chameleon doesn’t look skinny, but both chameleons are definitely sick.

Ridge at the Back

The boney ridge that goes along the back of your chameleons can become too pronounced and prominent if it’s underweight.

A chameleon with a healthy weight will still have these ridges, but they won’t protrude as much. 

Limbs and Tail

Though lean, healthy chameleons will have muscular limbs and tails. If they seem to have visible bones and a dehydrated sort of appearance, your chameleon is likely too skinny.

Note: a chameleon with its rib cage visible doesn’t necessarily mean it’s skinny. It’s perfectly normal for them to have some visible bones along the abdomen! 

Overall Weight

If you own a measuring scale, great! You can measure the weight of your chameleon right away and quickly assess whether it’s healthy or skinny.

Below are the average weights (as adults) for some common species kept as pets.

Do note that these weights can vary widely depending on individuals and their size. 

Species Weight (Male)Weight (Female)
Veiled Chameleon100-200g85-130g
Jackson’s Chameleon90-150g80-110g
Panther Chameleon100-180g80-120g

Why Does My Chameleon Look Skinny? Possible Causes

Some reasons behind your chameleon being skinny are more worrisome than others. Here are the possible causes:

Diet and Deficiencies 

Chameleons tend to get bored of eating the same food every day, which is often why they refuse to eat, and in turn, lose weight.

More importantly, not varying the food often deprives your lizard of much-needed nutrients and causes deficiencies, also leading to unnecessary weight loss.

Tip: check the bottom of the cage for any insects crawling around. You may think your chameleon has consumed the live insects you dropped in, when in fact, they might be roaming about or hiding under foliage because your pet refused to eat them.


Sunken eyes, wrinkled skin, and loss of appetite – all of which make a chameleon look skinny – may be due to dehydration.

It’s very easy and common for chameleons to become dehydrated, and it can be a fatal condition if not attended to immediately.


How to tell if my chameleon is skinny?
While this chameleon may appear a bit skinny, it still looks perfectly fine.

Although it’s normal for chameleons to carry some parasites, captive ones can often be infected with harmful parasites such as coccidia, which attack the intestinal tract.

This results in appetite loss, weight loss, and an overall decline in health.  


Mouth rot or stomatitis is a common infection among chameleons. These painful swellings in the soft tissues of the mouth can lead to appetite loss. 

So if you notice your chameleon refusing food and losing weight for no apparent reason, you might want to examine its oral cavity closely. 


Chameleons are very sensitive to their surroundings and any changes that may occur in them, and can easily become stressed.

When they’re stressed for a prolonged period, they might stop eating and start to lose weight, contract diseases, and behave unusually.

Feeling Threatened 

When they feel threatened, chameleons flatten their bodies or suck in their abdomen to hide, which makes them look very skinny. 

If you always notice your chameleon with a flat body, chances are that it’s scared whenever you approach its tank and isn’t really underweight. 

Treatment and Help for Skinny Chameleons 

Does my chameleon have a normal weight?
This is what a very well-fed chameleon looks like. Look at the thick arms and legs. It even appears a tiny bit chubby.

Luckily, there are certain measures you can take to ensure your chameleon maintains a healthy weight. Here’s how you can help:

Provide Nutrients  

Try to provide your chameleon with a variety of insects and switch them up every other day to keep it interesting for them.

Stuff like crickets, dubia roaches, and silkworms should be staples in their diet, as they have high nutritional value. 

Also, ensure that you dust live prey with supplements and gut-load them with fruits, collard greens, and other veggies to provide essential vitamins and minerals to your chameleon.

Doing so will help your chameleon gain weight healthily – we don’t recommend trying to ‘fatten up’ chameleons by feeding them fatty foods.

If your chameleon is always eating its shed skin, that’s a sign that it might be nutrient deficient, as we explain here.

Note: chameleons can get addicted to super worms and wax worms – insects known to have very little nutritional value – and may refuse to eat anything other than them. Remember to only feed these to your chameleon as an occasional treat.

Provide Enough Humidity

Just by maintaining an optimum humidity level between 60-80%, you can save your chameleon from a lot of unnecessary stress, illnesses, and weight loss. 

Mist regularly (or better yet, get an automatic mister), have drippers installed in strategic locations, and use real plants to retain water for a longer time. A shower can also help chameleons that are more dehydrated than usual.

However, if your chameleon is very dehydrated with sunken eyes and wrinkled skin, take it to a vet on an urgent basis.

Tip: If you are worried that your chameleon might be dying, read our article on signs your chameleon is dying here!

Appropriate Housing

An important preventive measure for weight loss and illnesses is ensuring good housing with an appropriate environment for your chameleon.

A spacious cage, a proper UVB light and heating setup, hygrometers, and thermometers to measure humidity and temperature is essential for maintaining an optimum environment. A happy chameleon is a healthy chameleon!

Visit the Vet! 

This chameleon is still healthy but more on the skinny side.

If all the above boxes are ticked and your chameleon still seems too skinny, it’s time to visit a certified veterinarian who can prescribe the appropriate treatment plan. 

Your beloved pet might be suffering from infections or a serious underlying illness that can only be diagnosed through fecal exams and blood work.

Final Thoughts 

Chameleons being skinny isn’t usually a cause for concern, and having a nutritious diet plan usually does the trick.

However, it’s always better to check in with a vet to ensure your chameleon is the correct weight for its age and is healthy. 

Pierre And The ReptileCraze Team
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