Invention Insider on Instagram: "One of the most effective “tools” electricians have ever used isn’t a machine at all, it is a trained ferret. 🐾 For decades, utility crews discovered that ferrets had the perfect combination of traits for pulling wiring through extremely tight and hard-to-reach spaces. Their bodies are long, flexible, and naturally curious, making them able to navigate narrow conduits and underground channels that humans and early tools couldn’t access. Electricians would attach