This might be the weirdest science story you'll read this year.
- The Editors at Very Cool Facts

- Oct 23
- 1 min read
The Goats That Changed Biomaterials Research
Spiders aren’t just web-weavers. They spin one of the strongest materials on Earth. Spider silk is stronger by weight than steel, tougher than Kevlar, and flexible enough to stretch several times its length.
One of the earliest breakthroughs in recreating this super-material came from an unexpected source: a herd of genetically engineered goats.
When scientists couldn’t farm spiders for silk (they tend to eat each other), they turned to goats to do the job.

Scientists inserted the spider silk gene into goats' DNA so they could produce silk proteins in their milk.
Once collected, the proteins could be spun into strong, lightweight fibers. It was strange, brilliant, and it worked.

Today, most production has shifted from goats to engineered bacteria, yeast, and plants, which are easier to scale for commercial use.
Companies like Bolt Threads and Kraig Biocraft Laboratories are developing spider-silk-inspired materials for clothing, medical uses, and sustainable alternatives to synthetic fabrics.

Why the obsession? This material is light, strong, and biodegradable.
It could reshape everything from body armor to aircraft components to tissue engineering.
And it all started with a few goats.

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