Why Flake When You Can Shed?

Reptile skin is really interesting.  Instead of flaking off like human skin does, reptiles shed their skin in strips. Snakes shed one complete body skin at a time. Lizards might shed their skin in sections of the body.

The scales that make up the skin are made by the epidermis of the protein keratin. The skin provides an external covering provides protection and helps retain moisture. 

The skin on the left is being shed, and the colorful new layer underneath is on the right.  You can surely see why they are called Red Tegus.

Rascal is getting ready to shed his old skin, so it appears white.

My friend Rascal, a Red Tegu, offered to help me show shedding lizard skin. He has thick beaded scales, that appear to be a lovely dark red.  However, when it’s time to get rid of his old epidermis, the skin looks white. That’s because the tegu’s color is not in the outer epidermal layer, but underneath.

By the way, keratin is what you humans use to make your skin, hair and nails with.  Don’t you wish you could shed your skin like us reptiles?


This is a piece of the shed skin.  Notice there is no color except for a little black or melanin pigment.

Graphic image book cover about iguanas
Thirty pages of Iguana information and fun activity sheets for grades 2-4. Includes coloring pages, fact sheets, T/F about reptiles, parts of an iguana coloring page, compare animal traits, name matching, count and classify, reptile spelling page, life cycle of the iguana cut-and-paste activity, ecology word problems, iguana word problems, creative writing prompt, opinion writing exercise, mean, mode, median, and range worksheets, counting iguanas, histogram worksheet, grams-to-pounds worksheet, trace the words and color, short i sound, create an iguana puzzle.

Lyric Power Publishing LLC offers fun and educational science workbooks and activity sheets. Looking to supplement science at home? Make it fun with economical and fun activity sheets!

One example is the workbook above. Learn all about iguanas in this 30-page workbook that is only $2.95. and you buy it once and print as many times as you’d like!

What is that Tongue Doing?

I have lived with many iguanas over the years, but Stella, a green iguana, is the only one who constantly sticks her tongue out. I’m always afraid I’ll startle her and she’ll cut her tongue with her razor sharp teeth. Fortunately, that has never happened. Her tongue is intact. 

So, why is her tongue always sticking out? She’s tasting or “smelling” the world around her. Iguanas don’t smell with their noses like people do. They “taste” the world. Scent particles in the air are collected on the tongue, then brought into the mouth. The particles are analyzed by special sensory cells for identification. These cells make up the Jacobson’s or vomeronasal organ. If you watch an iguana walking, you’ll see her flicking her tongue out. If something is particularly interesting, say a tasty bit of food, the tongue flicks back and forth a lot.

Stella’s forked tongue, with which she “tastes” the world.

Another interesting thing about iguana tongues is that they are forked! Just like a snake’s tongue. You might also notice that the end of Stella’s tongue is darker. That’s because it is more enriched with blood. The better for tasting!

Iguanas are fascinating friends. To learn more about them, check out the Lyric Power Publishing workbook with activity sheets, called My Unit Study on Iguanas.

Graphic image book cover about iguanas
Thirty pages of Iguana information and fun activity sheets for grades 2-4. Includes coloring pages, fact sheets, T/F about reptiles, parts of an iguana coloring page, compare animal traits, name matching, count and classify, reptile spelling page, life cycle of the iguana cut-and-paste activity, ecology word problems, iguana word problems, creative writing prompt, opinion writing exercise, mean, mode, median, and range worksheets, counting iguanas, histogram worksheet, grams-to-pounds worksheet, trace the words and color, short i sound, create an iguana puzzle.

How Do You Know if a Lizard is a Green Iguana? by Curtis Curly-tail

Hello, out there, friends and fans! It’s me, Curtis Curly-tail!

Today, I wanted to ask you if you knew that Green Iguanas, Iguana iguana, come in different colors? And, if they come in different colors, how do you tell if a lizard is a green iguana? 

You look for the subtympanic scale. “What is that?” you ask. Well, I don’t have one, so I had to look it up myself. The subtympanic scale is that large scale on the side of the green iguana’s head.  Sub means below and tympanic means ear.  So, it’s the big scale below the ear. I have a friend who calls that scale the “jewel.” She always admires the beautiful coloring in the iguana jewels.

A blue Green Iguana

Here are some of my green iguana friends, in very different colors. As you can see, they are not just green–but they are all still called “green.” Even the green green iguanas come in different shades of green. It can be confusing, if you ask me.

The native range of the green iguana is southern Mexico to central Brazil and several Caribbean islands. If you don’t live in those areas, why should you know how to identify a green iguana? Because they’re very popular as pets in people’s homes and they have been introduced to many other places in the world, where they don’t belong and can be causing harm. That means they’re “invasive.”

A Green Iguana
If you are interested in passing out these descriptive booklets, which are free, please use the contact form on Elaine’s website to obtain them.

If you want to know the differences between a green iguana and their cousins, the rock iguanas, Lyric Power Publishing, LLC has several identification booklets to help you tell them apart.

Graphic image book cover about iguanas

If you enjoy learning while coloring and doing activities, I encourage you to be creative. To learn more in fun ways about iguanas, please see our 30-page workbook full of activity sheets about iguanas, My Unit Study on Iguanas. Remember that the green iguanas you color, don’t have to be green!

60 Tried and True Iguana Foods

Ever since I operated a reptile rescue center, I’ve had a good number of iguanas. Over ninety percent of newly purchased iguanas die within the first year, so their good health is very important to me. Fresh vegetables and fruits are important to their survival.

I use a potato peeler to make long slices of zucchini and carrots and chop the other veggies into small pieces.

Here is a list of basic vegetable and fruits and the special treats that can be given on an occasional basis.

Their basic salad in the morning includes Collard Greens, Red Bell Peppers, Zucchini, Carrots, and Bananas or Grapes.

To learn more about these fascinating big lizards, see the 30-page downloadable Supplemental Workbook, My Unit Study on Iguanas
at Lyric Power Publishing, LLC.