That black long bug is almost certainly a millipede, a centipede, or a ground beetle larva. The key clue? Look at its legs. If it has what seems like a million tiny legs wiggling in waves, you’ve got a millipede—a slow, harmless recycler of dead plant stuff.
If it’s super fast, with long, whip-like antennae and one pair of legs per body segment, that’s a centipede. And yes, they can bite, but they’d rather eat cockroaches than you. Pretty cool, right?