Do Lizards Turn Into Alligators? The Science Behind the Myth.

Affiliate Disclaimer

As an affiliate, we may earn a commission from qualifying purchases. We get commissions for purchases made through links on this website from Amazon and other third parties.

We’ve all heard the story before: a pet lizard escapes and grows into an alligator that terrorizes a small town. It’s the stuff of nightmares for pet owners, but is there any truth to this myth? After all, lizards are just little cousins to the alligators we know and fear. The answer isn’t quite so simple. Let’s examine why this myth persists and how it holds up scientifically.


Do lizards turn into alligators?


It is a common misconception that lizards can turn into alligators.

This myth likely originates from the similar physical traits of both animals, including their long bodies and scaly skin.

In reality, lizards and alligators are two distinct species whose evolutionary histories diverge far further than what can be explained by a single species morphing over time.

Furthermore, lizards are often much smaller than alligators, with many species ranging from no more than a few inches to about three feet in length.

On the other hand, alligators can grow up to fifteen feet long.

Therefore, it is doubtful that these two animals could be related by anything other than an evolutionary difference between each species.


The Evolutionary Relationship Between Lizards and Alligators


One must look at their evolutionary history when considering the relationship between lizards and alligators.

While both reptiles belong to the class of animals known as Sauropsida (which includes all living reptiles), they each have their distinct taxonomic branch on the evolutionary tree.

Alligators are members of Crocodylia, while lizards belong to Squamata—the two groups diverged more than 200 million years ago.

This means that while lizards evolved from ancient reptiles that lived during the age of dinosaurs, they are not directly related to modern-day alligators in any way.


The Metamorphosis Myth


So if lizards aren’t related to alligators, why do so many people believe they can turn into them?

The answer may lie in a biological phenomenon known as metamorphosis—a process by which particular species of animals undergo drastic physical changes throughout their life cycle.

In some cases, these changes include an extreme increase in size or even significant anatomical differences such as wings or horns.

However, none of these changes involves turning one species into another entirely—this is simply impossible due to fundamental genetic differences between species.


Can Lizards Grow Into Giant Monsters?


It’s also important to note that while some lizard species (such as Komodo dragons) can grow very large, they will never reach anywhere near the size of an adult alligator.

No lizard species has ever been recorded reaching more than 10 feet in length—while most adult American Alligators can easily exceed 10 feet in length, with some specimens measuring up to 15 feet long.

So regardless of how much your pet lizard may grow over time, you don’t need to worry about it becoming an adult alligator anytime soon.




In conclusion, there is no scientific evidence backing up the myth that pet lizards can eventually turn into full-grown alligators – though evolutionarily speaking, there is some distant connection between them! However, despite this fact, it’s still essential for pet owners to take extra precautions when housing their pet reptiles, as even large lizard species cannot reach anywhere near the size of an adult American Alligator.

However, your beloved reptile should remain safe and secure in your home for many years with proper care and attention.

About the author

Latest posts

  • Can You Pick Up Grass Snakes? Tips and Precautions

    Can You Pick Up Grass Snakes? Tips and Precautions

    Yes, you can pick up grass snakes. However, it’s important to handle them gently and with care to avoid causing them any harm.   Is It Safe to Pick Up Grass Snakes?   Grass snakes are non-venomous, harmless snakes commonly found in grassy areas and gardens. They are docile and generally not aggressive towards humans.…

    Read more

  • Can Grass Snakes Hurt Cats? A Clear Answer with Expert Knowledge

    Can Grass Snakes Hurt Cats? A Clear Answer with Expert Knowledge

    Grass snakes are not harmful to cats. They are non-venomous and typically avoid confrontation with larger animals. In fact, they are more likely to flee when encountering a cat. However, it’s always best to supervise your pets when they are outdoors to ensure their safety.   Potential Risks to Cats Bite Risks   Grass snakes…

    Read more