english: 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.
non_english: Ak si spravíte výskum, zistíte, že na svete žije okolo 50 000 rôznych druhov pavúkov a asi dva tucty z nich sú jedovaté. Dva tucty z 50 000.