Question

why caterpillars need to shed their skin when they grow bigger but humans do not​

Answer 1

Answer: When an insect like a caterpillar grows, its skin doesn’t stretch to grow around it like it does with animals like birds or humans. So when it’s done growing, it has to get rid of its old skin or it’ll be squeezed and get hurt, and maybe even suffocate. Reptiles and other arthropods such as insects, arachnids and crustaceans do this too!

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Answer 2

The skin of a caterpillar never grows larger so when a caterpillar gets too big for its skin the skin comes off with another skin underneath.Human skin grows so we don't have this problem. because as all caterpillers grows bigger their skin gets tighter so they shed just like snakes, lizards,and all other amphibians but us humans we only shed on our pams and feet because every where else our skin grows with are body

Main reason:

If they don't shed their skin then their skin would explode from the growth. Unlike humans, their skin doesn't grow with their body. Animals such as caterpillars and snakes do not shed dead skin cells individually, an entire layer peals off at once instead. Whereas us humans shed millions of dead skin cells every day without us realizing it. :)