Ferrets have a great curiosity for holes and tunnels and have been used to run strings and small cables for some time. David found this piece on ferrets working for Virgin Media.
Notice the date (the Virgin Media PR is a bit suspect:-). I haven't heard of this in some time, but wire running has certainly been used in the past.
In the early 70s Felicia the ferret was used to build the accelerator at FermiLab.
This fascination with tight spaces is a double edged sword. They also love to hide anything they can move - stamps, keys, ... whatever they can grab.
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