No. Many kinds of insects and spiders produce silk.
I'm pretty sure they are called inch worms!
silk worms are tiny worms hanging from silk on a tree
yes,there is a market for silk from silk worms.
Silk worms create silk. That's where silk comes from.
A lot of silk is produced in Japan, which is why silk worms are so popular there.
Silk is not made out of silk worms. Silk is made by silk worms which spin to make a cocoon for themselves.
I'm pretty sure silk worms. (They produce silk) I could be wrong though
One,but you must remain patient! It will take quite awhile!
silk worms
silk worms
As a group, the silk worms have a corner on this answer: it's they who produce the most silk used by humans as fibre. If, however, you want to know which animals -- spiders, caterpillars and so forth, produce the most 'silk', your answer may depend on a more narrowly defined question.