So you open your tarantula's cage, when suddenly you feel something hit your eye. Moments later, it starts feeling sore and getting red, sort of like if you had pink-eye.
That's what happened to a British man a year ago. He went to a doctor and that was when he learned his tarantula has a super-power called "urticating hairs."
When the big spider rubs its legs against its body really fast, spider hairs shoot out in a cloud... They're urticating hairs! This wouldn't be such a problem, but tarantula hairs have barbs in them, so the spider actually shoots its urticating hairs for self-defense!
The problem is that the hairs are too small to remove. A year since it happened, the British spiderman's eye has gotten better, but it's still not completely healthy.
So what had he done to make his tarantula so mad? He tried to clean the spider's cage! That'll teach him.