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The Pinocchio mystery: Why scientists were fooled by this chameleon
The study suggests that these chameleons’ elongated snouts evolve surprisingly quickly, and are likely influenced by female mate choice.
First described in 1877 and also known as the lance-nosed or blade chameleon, C. gallus was named after the Latin word for rooster (Image: Gemini)
When you think of Pinocchio, you probably picture that famous growing nose. But what if there’s a real-life animal with a similar feature, one that kept scientists guessing for years? Meet the “Pinocchio” chameleon, a reptile with a nose that’s as intriguing as its story.
Deep in Madagascar, a place known for its incredible wildlife, lives a group of chameleons with long, horn-like noses. These colourful forest-dwelling lizards often come up with vibrant hues. For a long time, scientists identified these reptiles mainly by their appearance, especially the shape and size of their noses. But looks can be deceiving.
Recent research has shown that these long-nosed chameleons are more complex than once thought. What was previously grouped as a single species actually comprises multiple distinct species, such as Calumma pinocchio and Calumma hofreiteri. In other words, the famous “Pinocchio chameleon” isn’t just a quirky-looking reptile—it’s part of a much bigger evolutionary story.
Fooled for years
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For decades, scientists relied on visible features like nose length, shape, and curve to classify these chameleons. Some had long noses, others short; some straight, others curved. It seemed simple, but it wasn’t.
With the help of modern genetic studies, researchers discovered that these physical traits didn’t tell the full story. What was thought to be one species turned out to be several, misidentified for years.
To solve this mystery, scientists used a method called museomics—studying DNA from preserved museum specimens. This allowed them to compare old samples with living chameleons and spot differences that weren’t visible to the eye.
Some of these specimens dated all the way back to 1836, helping researchers connect past records with present-day findings.
Why all the confusion?
One surprising reason is how quickly these chameleons can evolve. Scientists believe female mate choice plays a role, meaning males may develop different nose shapes and sizes to attract partners.
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So, the nose isn’t just a random feature, it’s likely shaped by evolution and courtship.
This discovery shows how much we still have to learn about the natural world. Madagascar alone is home to over 40% of the world’s chameleon species.
Depending on how species are classified, the island has around 97 to 100 types of chameleons, while the global total is about 236.
It’s a reminder that nature still holds many surprises. What looks simple at first glance can turn out to be far more complex. And unlike Pinocchio, this long nose has nothing to do with lies—it’s all about survival, attraction, and evolution.
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