So if you actually do the research, you find out that in the world there are about  50,000 different types of spiders, and there are about two dozen that are venomous out of 50,000.
Se fizermos a pesquisa, descobriremos que, no mundo, há cerca de  50 mil tipos diferentes de aranha, e há cerca de duas dúzias que são venenosas, de 50 mil.