Like many other venomous creatures, the black widow spider has bright red pattens on it as a warning sign for predators that would attempt to feed on it. The black widow spider is not capable of killing a bird that would eat it, but the digestive sickness that would follow, will be definitely enough to make it avoid attacking the black widow again. Hobo spiders definitely do not deserve the label of aggressiveness, and presently, there are trends of opinion among scientists related to the real danger of this species for humans: there are some who actually claim that hobo spiders are no threat to humans. The only time when hobo spiders are really dangerous is when they are laying their eggs, particularly if they see you as a threat to their future siblings. Unlike other related species, the hobo spider isn't hairy; though the legs of these creatures are very strong and large, they are also very smooth. The life extent of the hobo spider is pretty reduced, but though this species lives for a short period of time, their existence is pretty intense. Every year around August and September the hobo spider males are incredibly active, and it is during this time of the year that most bites are reported. In the majority of cases medical assistance is not necessary and a bag of ice placed on the bite will do. If discomfort does not cease, you should not postpone seeing a doctor. Although trapdoor spiders are not generally dangerous, some people may experience very strong reactions to the venom, like nausea, vomiting and headaches. Last but not least, certain spider species are a real threat to humans by the damage their venom can do to us. Scientists are the one directly interested in the correct identification of certain spider species, nevertheless, for the average man, knowledge in the field can save one a lot of trouble. When you are able to identify spider species correctly, the risk of getting bitten out of personal negligence is a lot lower; moreover, in case you do get bitten, you can provide valuable information about the species, thus making treatment a lot easier. Normally, a camel spider will not attack a human being, but if one gets accidentally bitten, the condition can become very painful indeed. However, the bite is not as serious as that of a tarantula for instance, since the camel spider has no venom to inject. The only venomous species variety grows in India and it is not such a real threat to humans at all; moreover, the camel spider will not attack a prey that is larger than itself, hence the myths and rumors are definitely far-fetched and unworthy of consideration.