https://www.chewy.com/education/reptile-and-amphibian/turtle-and-tortoise/shell-of-turtle
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Turtles may be known for their sturdy, distinctive shells, but what many do not realize is that these shells are a living, growing part of the turtle’s anatomy - made of bone, covered in keratin scutes, and fused with their spine and ribcage.
Rather than acting like removable armor, the shell is a permanent extension of their skeleton, protecting vital organs and offering defense against predators and environmental threats.
Over time, the scutes on a turtle’s shell naturally wear down and are replaced as the turtle grows, a process known as shedding.
This healthy shedding allows for the removal of old, damaged scutes and helps maintain the shell’s integrity and appearance.
Not all turtle species shed in the same way or at the same rate - some aquatic turtles shed frequently, while terrestrial turtles may do so less often.
Regular shedding can be a sign of good health, particularly if the turtle has access to clean water, proper nutrition, and adequate basking areas to dry out their shells.
However, incomplete or irregular shedding can be a sign of poor husbandry or underlying health issues. Understanding the biology and care needs of a turtle’s shell, including why they shed, is essential for ensuring their long-term health and well being.
Chewy editorial team hopes this guide helps deepen understanding of the incredible structure and purpose behind a turtle’s shell. With the right knowledge and care, pet parents can help their turtle companions thrive in comfort and health for many years to come.