When trains collided in Australia recently, officials cited a likely cause: Hundreds of squished black millipedes had made the tracks slippery.
Let's look at a couple of other critters that can change road conditions in cringe-worthy -- and sometimes dangerous -- ways. Or just make your commute a bit slower to negotiate than usual!
Depending upon where you live, goat herds have been known to come before traffic.
Toads in the road (toadkill?) can make for messy driving circumstances. That's not fun for cars or toads.
Luckily for them, ducks and ducklings are cute enough to generate a lot of automotive breaking power in concerned drivers. Squirrels must envy them.
Parental geese and goslings have an alarming habit of seeing crosswalks wherever they need them. Like ducks, these critters will usually win the right of way from drivers if at all possible.
Deer are unlucky enough to need to cross roads from time to time. Hit one of the poor creatures with your car and that's usually the end of the deer, and sometimes even your car.
Similar to goats, a cattle herd might sometimes need to cross where cars would also like to go.
Slow and steady wins the race -- at least in the world of fables. In real life, though, poor pokey turtles can be double troublemakers: They can make cars swerve to avoid them or make the road surface unsteady after they've met their untimely demise.