Silkworms breathe through tiny holes along their sides called spiracles (breathing holes), which connect to tubes that carry air deep inside their bodies!
Insects And Bugs - Facts for Kids

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Random Facts About Insects And Bugs For Kids
Some desert ants have tiny hair-like structures on their bodies that harvest water from morning fog!
Male ladybugs are usually smaller than females, but both look almost exactly the same!
Ladybugs can flap their wings up to 85 times per second when flying!
Water striders can catch flying insects that accidentally land on the water's surface!