Caterpillars weave their cocoons using a silk produced from specialized glands in their mouths. They spin this silk into a protective covering by secreting it in a liquid form, which hardens upon exposure to air. The caterpillar typically attaches the cocoon to a stable surface, allowing it to secure itself while undergoing metamorphosis into a butterfly or moth. The process involves careful manipulation of the silk threads to create a durable structure that shields the developing pupa.
Because its just a mertamorphotical stage so that it can grow into a beautiful butterfly
you could find catapillars in your very backyard. but you have to be careful about it because you do not want to find a venimous catapillar.
No Way
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The female lac bug excretes a resinous substance to create coccoons. This resin is what is used to create shellac.
Giant Rhodesian catapillars
The caterpillars eat the leaves that they hatch on.
they can but the catapillars can eat their way out sometimes
yes,many songbirds eat them.
usually it is catapillars feeding off of the leaf
because they have small lungs.
No bones. Invertebrate. To be a vertebrate, you need a backbone.