[vkaku]

Why not switch to LACP + DOCSIS/DECA/MOCA + TV CoAx cable? Cheap DirecTV DECA Adapters can carry speeds of duplex 100Mbps quite well. From marketing material, Motorola's MM1000 Adapters promise a 1000Mbps connection over CoAx.

You could try adding a plastic sleeve to the cable - but I've always considered CoAx to be resilient for rural/jungle Internet, especially because they are way easier to patch after cable cuts. It also doesn't make a difference if the chopping species is 'Cable Mafia Men' or 'Red Bottomed Rhesus Macaques'.

At this point, It is unreasonable to expect monkeys or humans to understand the subtleties of optic fiber cold crimping.