Squirrels: 1, Internet: 0

Ask someone why the internet went down and they picture a hacker in a hoodie, hunched over three monitors, typing very fast. The truth is dumber and much more satisfying: somewhere, an animal did something an animal does, or a human skipped a phone call, and a chunk of the modern world went dark.

The industry has a name for this general phenomenon, and it isn't flattering. Outage postmortems, the internal ones nobody publishes, run heavy on categories that sound like they were invented for a children's book about consequences. A rodent. A bird. A shark, allegedly. A man in a yellow vest who really should have called before he dug.

The chewing problem

Start with rodents, because rodents start most of this. Rats and squirrels have teeth that never stop growing, which means they never stop chewing, which means every soft, warm object within reach becomes a candidate for demolition. Fiber conduit qualifies. So does cable insulation buried at exactly rodent-jaw height. Telecom crews keep a running, mostly unspoken tally of how much downtime traces back to an animal with no opinion on connectivity, just an itch it needed to scratch on something.

Squirrels escalate things considerably once they reach a transformer. A squirrel on a wire is a squirrel doing its job. A squirrel bridging two live conductors on a piece of grid equipment is a squirrel completing a circuit it was never invited to join, and the results arrive fast: a fault, a flash, sometimes a small pop of smoke, and a very short obituary for one unlucky rodent. Utilities have spent real engineering budget on squirrel guards. Squirrels have spent zero minutes respecting them.

Birds bring their own flavor of chaos. A wide enough wingspan landing across the wrong two points of substation equipment turns a bird into an accidental conductor, and the flashover that follows can trip protection systems for an entire local grid segment. Nobody designed the system to survive a heron with poor spatial awareness, and it shows every time one tries anyway.

Everything under the sea is apparently hungry

An enormous share of intercontinental internet traffic travels through undersea cables roughly as thick as a garden hose. Sharks bite these cables occasionally, drawn in by the faint electromagnetic field the cables give off, and while the scale of the problem has been exaggerated into legend over the years, it was real enough that manufacturers now wrap deep-sea sections in steel armor for exactly this reason. A marine biologist somewhere finds this delightful. An engineer somewhere finds it faintly insulting that a fish forced a redesign.

Fishing trawlers do far more submarine cable damage than sharks ever have, and there is no folklore attached to it, just physics. Drag an anchor or a weighted net across the wrong stretch of seabed and a cable shears clean, taking a slice of a continent's bandwidth down with it. No malice here, just a boat doing what boats have always done.

Back on land, the single most reliable way to sever fiber remains the oldest one: a backhoe, a construction crew, and a decision to skip the call that would have shown exactly what was buried before anyone started digging. The industry has an actual term for this, delivered with the dry affection of people who have filed the same incident report under a dozen different street addresses. The line gets marked in bright paint sometimes. The bucket swings anyway, because paint has never once stopped a bucket already mid-arc.

None of this indicts fragile technology so much as it indicts scale. Wrap enough cable around enough of the planet and it will eventually intersect with every incisor, beak, fin, and unread utility ticket in existence. Redundancy exists because of days like that, and so does armor plating thick enough to annoy a shark.

So the next time a connection drops, skip the conspiracy theories. Somewhere out there, a squirrel just had the best and last five seconds of its life, and the rest of us are the ones who pay for it.