Actually happened in my neighborhood lost power because of it. It through a big breaker in one of the boxes.
A similar thing happened several years ago at a radio station I was working at, though it was a large bird rather than a squirrel.
The lights went out, the UPSes started chirping, and the generator fired up and transferred automatically. Commonplace at broadcast stations in small hick towns on the outskirts of the distribution grid. After an hour of the generator being on, I started to get a little concerned. Went outside and saw that the lights were still on all around us. Looked at the pole outside, and saw the big breaker on one of the three phases tripped out at the primary.
When the power company arrived and went up the pole, the lineman found the remains of a pair of bird feet welded to the top of the can. Nothing else was left, though upon closer inspection we did find some feathers on the ground. Probably a hawk.
Searching youtube produces a variety of interesting results on this topic; some animal, some human. They are not for the squeamish. This is one of my favorites. Don't click unless you want to see a man die:
This is a cactus needle that poked through my hand guards.They are ~1/8" thick polypropylene(i think, poly something). It happens about once a year, but ive never seen one penetrate so deep and with so much girth.
And a 2nd once happened about an hour later! it was the normal size and penetration though... lol
I think there are those that might disagree with you.
(pictures of Rome)
That's not exactly helping the point. I mean, Rome was only the dominant military and economic power on earth for, what, not even 1,300 years? And then *boom*, no more native speakers of Latin.
******* aqueducts... Look at 'em sitting there, all like "hey, look at me! I was built prior to the birth of Christ, and I'm still reliably carrying water across Italy without any external power input."
I'll bet you a dollar they collapse under their own weight long before the sun goes supernova.