We don't have dangerous spiders here. But the animal I can't stand and groses me out are tics.
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I don't mind pulling them out of my dog so much, but I'd freak if I was bitten.
It's really the only animal I find really disgusting. I've hold snakes and tarantulas in my hands and work with wild animals at the wildlife rescue center. But I hate ticks, hate them with a passion.