Dorsal scales facts for kids
Dorsal scales are special plates found on the backs of snakes. Think of them as the tiny, tough tiles that cover most of a snake's body, from its neck all the way to its tail. These scales are different from the larger, wider scales on a snake's belly, which are called ventral scales.
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What Are Dorsal Scales?
Dorsal scales are a key part of a snake's skin. They help protect the snake from injuries and keep it safe from drying out. These scales grow in rows along the snake's body. The way these scales look and are arranged can be very different from one snake species to another.
Why Are Dorsal Scales Important?
Scientists often study dorsal scales to help identify different types of snakes. The number, shape, and texture of these scales are unique for each snake species. This makes them very useful for telling snakes apart.
Counting Dorsal Scales
When experts count dorsal scales, they usually do it at three specific spots along the snake's body. This helps them get a full picture of the scale pattern.
How to Count Them
- First spot: One head-length behind the snake's head.
- Second spot: Exactly in the middle of the snake's body.
- Third spot: One head-length before the snake's vent (which is like its belly button area).
For example, you might see a count written as 19:21:17. This means there are 19 scales at the first spot, 21 at midbody, and 17 near the vent. If only one number is given, it usually refers to the count at midbody.
Easy Counting Tips
It's often easiest to count dorsal scales by looking at them diagonally. You start with the row of scales closest to the belly scales, called the paraventral scale row. As you count, you might notice that some scale rows feel different.
Types of Dorsal Scales
Not all dorsal scales are smooth. Some can be raised or have a ridge down the middle.
Smooth Scales
Many snakes have smooth dorsal scales. These scales feel flat and sleek, like polished glass. Snakes with smooth scales often look shiny.
Keeled Scales
Other snakes have keeled scales. These scales have a raised ridge, or "keel," running down their center. This makes the snake's skin feel rougher, almost like a file. Keeled scales can help snakes grip surfaces better.
Dorsal scales are a fascinating feature of snakes. They show how amazing and diverse these creatures are!
