Spider's are not that dangerous to the bets of my knowledge, even tarantulas are only fatal if you have a heart condition. You are mostly creeped out by bugs because the subconscious brain associates them with disease carriers, most of the time they are harmless. There should be a list of deadly animals in the zone, read that if you are really feeling insecure, otherwise use your common sense, don't try to pet the teddy and don't try to play the flute to the viper.