Tried not to reply to this with a follow up post, bc usually the animal haters come out in these types of threads..
Yeah it is difficult having wild animals *ahem* domesticated animals at the spot with gear around. I am usually strategic in playing with the cats while monitoring of just before so that they are not overly inclined to play with the delicate wire housing/cables..
My cat Danka was trained on a leash to chill outdoors and just sits safely in our fenced in yard out back, and my monitoring sessions are claw/teeth mark free as a result..two way win, the kitties get to go out and stare at the birds wishing huntful and hateful crap on them, while I am inside and can listen to some great tunes uninterrupted.
VERY sorry to hear about your lines..as I read in another humorous post above, your feline may be blessed with a golden ear, and is simply attempting to communicate that it is time for a re-cable on those cans!!!
(hope it works out, let us know how it goes)
I love animals, and although can understand being upset, it is totally not their fault in some ways (the animals), as the instincts TAKE over when these mysterious long legged black spider legs often "come to life" or "jump out of no where from the floor".... (the cable monster)
They are just practicing their ninja attack defense moves for your safety their in the domicile, against would be insect pests, and other non invited arachnids..