The science world has created a hybrid animal called the spider goat. It looks just like a goat, but has been modified to contain the gene of a spider so it can create the protein responsible for dragline silk.
Dragline silk is the threading that spiders emit when falling. It's stronger than kevlar and has endless possibilities as a fiber. So, these re-engineered goats give off milk that contains the dragline silk protein. When the fats and impurities are removed, the isolated protein can be spun into silk threads on a massive scale. Much more dragline silk that a hundred spiders could spin.
Its applications are widespread. The silk thread can be used in surgery. The body does not reject it as a foreign body and it's strength makes it ideal for repairing ligaments.
On the surface, this sounds great, but it's this kind of bio-fiddling that created Tomacco.