Advertisement Try telling a large parrot owner that only dogs can bond emotionally with humans. Let us know how far you get with that. For that matter, horses, cats, primates, rats, and even wild animals like bears and lions have been known to show strong loyalty to humans. Just because animals don't bond with YOU doesn't mean they don't bond with anybody else. I realize tarantulas aren't nearly as emotionally complex as even the lower vertebrates, but they don't have to bond emotionally to tolerate handling well. Several of my spiders don't show any discernible aversion to handling. I certainly don't think they enjoy it, but they don't care either way, so why bother "protecting" them from it? I like it, and they don't dislike it, so there's no logical reason not to handle them. To a spider, it's just another part of the environment, like plastic plants, artificial lighting, and the big metal tongs that deliver meals right on schedule.