So, you know how sometimes people run around and have a lot of fun? Well, there's a festival in Spain called the Running of the Bulls where people run around and try to show off how brave they are.
But the thing is, they're not just running around by themselves. There are big, strong bulls running behind them too! The idea is to see if you can run faster than the bulls and not get hurt.
Now, you might be wondering why anyone would want to do this. Well, some people say it's a tradition and part of their culture. Others just think it's exciting and a way to have fun.
But here's the thing: it can be really dangerous. Bulls are big animals with sharp horns, and if you fall or get too close to them, you could get hurt. That's why it's important for people to be careful and follow the rules if they're going to run with the bulls.
So, in conclusion, bull running is a festival in Spain where people try to run faster than big bulls, but it's also dangerous and not something to do without being very careful.